Just finished installing a PLM seat rail with a Bride Vios III seat in my AP2. I made sure to check S2ki for any reviews before purchasing the rail, but couldn't find anything worthwhile. Many people said they were crap, but didn't own or install one. Other only recommended purchasing an expensive seat rail. As my car is a Sunday/track bitch and I'm ballin' on a budget, I thought I'd provide some feedback on the seat rail.

The first thing I learned is that some of the bolts aren't properly tightened. Go around and remove every bolt and nut and put a few drops of Loctite to make sure nothing vibrates loose. Tighten appropriately.

Add extra grease to the rails by sliding them completely forward, applying grease to the track, slide backward and apply again. This will make the rails slide like buttah.

Make sure to drill a hole in the seat belt mount for the seat belt tab, this is documented elsewhere on the forum, easy stuff.

The least headache-y way to install the seat is to mount the uprights to the rail first, loosely secure the rail to the floor and then bolt the seat to the uprights. A 12mm racheting wrench really makes this task allot easier as the front-right bolt is tough to get to once the seat is mounted. Find the seat position that works best for you, mine ended up being lowest in the front and middle in the back (I'm 6'3, 185).

As for the rear right rail hitting the rail mounting bolt, everyone ran into this issue but never posted a solution. Hold on to your butts kids because I've got the solution and I'm willing to provide it free of charge! (I know, I'm so generous!) The key here is to use your trusty Dremel and grind away at the rear right mounting slot so the rail can slide a little bit more towards the center of the car. When this happens, the rail will be allowed to slide over the bolt and allow you to put the seat all the way back. Also, make sure the flats of the bolt head are inline with the rail, if you don't do this, the rail will get caught. Also, use a hex bolt (10mmx1.25x25mm) that has a large head. I was able to find one at Ace Hardware that worked really well. The reason for this is a washer will cause interference with the rail.

Adding a race seat to the S2K makes it a completely different animal. I can finally fit in the car properly and not feel like one of those bears on a bicycle you see at the circus. Also, the seat you take out of the car makes for nice interior furniture!

 

Make sure the bolt is grade 10 at least. Most hex bolts aren't that strong

Post a pic if you can