Remote Filter Kit, Stock Xterra Filter and New Filter
As you can see the single filter kit is actually a three filter kit if you compare the original filter the to new one.

I did replace the PH8 with a PH16 filter because the replacement filter is 1/3 shorter and will be easier to remove when I do an oil change due to the cramped conditions inside the engine compartment. I also replaced the 36' hoses with 48" hoses.

I manufactured a mounting bracket out of two 1/8" pieces of aluminum so I could mount the filter on the drivers side fender just under the brake master cylinder using the pre-drilled holes that take a 6mmx1 bolt. I needed the extension the bracket provides because when I used the holes without the bracket the filter was too close to the steering rod and could not be removed. After a bit of trial and error, I found the correct angle of bend on the bracket to be 25 degrees to keep the part where the filter mount was attached at 90 degrees.
This shows the angle of the bend and the 6mmx1 stainless bolt that I used to attach the bracket to the factory holes in the fender. Even though the bolt was stainless, I used Never Seize on the threads to keep the fender threads from rusting.
Factory threaded holes in drivers side fender under master cylinder.
Filter attached to the bracket before the bracket was bent, which I didn't realize I needed to do before I installed it and found it to be at an angle. I wanted the filter to be vertical to minimize the chance of an oil spill while changing the filter. I used a PH16 filter because it is the same size as the one the kit suggests, but shorter, so I have more room to install and remove the filter during an oil change. This seems to make the kit a two filter kit, as the PH16 is about 1/3 less volume than the PH8A that was suggested in the kit directions. The holes on the adapter top are for the oil lines that will run to where the factory filter was installed under the skid plate.
Here is the bracket installed under the brake lines on the drivers side inner fender.
Here is the remote filter installed on the fender of my 2000 Xterra. I used a spacer (2" block cut from a plastic 2x4) to move the filter out so the oil lines will clear the brake lines as space is fairly tight where I decided to install the kit. The next steps will show how I installed the spin on adapter, where the original oil filter was mounted. Don't forget to put the neoprene "O" ring in the grove in the adapter so it does not leak and tighten it the same amount you would a filter when replacing it. This was definitely more of a project than I anticipated and it only gets worse from here on.
This was a real pain in the ass, when I tried to install the spin on adapter, it would not make a complete turn since it hit the alternator bracket. This is when I realized this kit had never really been installed on an Xterra since it was not the proper size to fully screw on. I used a 4" grinder to remove about a half inch of the bracket so I could screw the adapter on, and even then, it also hit the oil pan, but I could force it past the pan.
Here is the adapter installed ready for the hoses which have to be installed on the lower connectors first, since the ends don't turn on one end of the hose, which by the way, I had to have replaced with longer ones. The ones that come with the kit would not reach to where I wanted to mount the filter, so I had to get 48" hoses instead of the 36" original ones.
Here are the hoses installed on the spin on adapter and then run up to the upper fender well where the filter will be mounted. Make sure you put Teflon tape on the threads of the hose ends to keep the connections from leaking.
The ends on one end will spin, so they can be tightened to the upper filter mount. I used a 22mm flare wrench to tighten the hose ends and put Teflon tape on the ends. Make sure the hoses are not twisted so they won't kink when mounted on the fender. They also need to have twist ties or zip ties attached to fender mounted objects so they will not hit the manifold and melt while driving.
This is the final instillation with the filter mounted on the inner fender well, so I will no longer have to remove the skid plate to change the filter during an oil change. Even so, this is a tight fit and getting the old filter out and the new one in is an interesting experience, but less of an issue than removing the plate. This was one of those projects that I am not sure I would do again because of all the problems involved in the instillation, but I no have a much larger filter (PH16) and I no longer have to take apart the front skid plate to change the filter.

Good luck and I hope this will be a help to you if you decide to go with the remote filter instillation.