I had to put the seats in before the shoulder belt assemblies to get the proper fit.  I found these at a local salvage yard.  They came out of a 95 Ford Escort ($28 a piece.)  Really nice seats, but a little taller off the floorboards than stock, which is kind of a problem for me (6').  I did the driver's side first.  I wanted to retain the slide mechanism and stock bolt holes, so I fabricated brackets using 1/8" flat stock strips and 1/8" angle iron to mount the Escort seats to the stock sliders.  The stock seats have the mounting holes 14 1/8" apart, the Escort seats have them 2 inches farther out.  I tried to just bolt them to flat strips that were a couple inches longer, which worked, but my first attempt ended up being too high and too far forward.  I modified the brackets even more, so with the seat back, the rear of the seat was actually on the floorboard, and the mounting holes of the seat were seven inches rearward of the "stock" placement bracket arrangement (I started out by using the stock Escort seat holes, but they weren't going to work.)  The bottom of the Escort seat frame isn't exactly flat, so I got the brackets to bolt into the areas that would lower the seat the most.  Even so, they are still slightly taller than the stock seats, but these are new and the old stock ones were really shot, so maybe they are similar to what a new-stock seat would be like.  The adjusting handle stuck too far out like this, so I bent the hell out of it.  Notice the sliders are still in the stock location, but the seat is just further back than stock, so it hasn't gotten in the way.  The base of the stock seats is just longer than the Escort seats.  I haven't really noticed any difference myself, execpt that these are a lot more comfortable.
On the passenger side, I tried to use the Escort sliders because stock EB passenger seats don't slide, but it ended up being way too high.  I just modified one of the Escort slider bracket arms (tore it off) and mounted it onto the seat base.  I used one of the 2 stock holes (next to the tunnel cover.)  I used more flat strip and angle iron and slightly modified the stock front support (farthest to passenger side) so I could use it.  I then measured/eyeballed the Escort seat frame holes in the rear and mounted them right to the floor.  Came out right on the first drills!!  So it doesn't slide, but it is in there good.
I only ended up drilling 2 holes in the floorboard, so that is good.  Notice that I left the seat hook catch in (stock passenger), but turned it backwards to fit so that I didn't have 2 empty holes.
Finished

I got these from the same salvage yard as the Escort seats.  They came out of an 89 Chevy (gasp!) S10 pickup.  Oh well, they are a lot safer.  They were only $20 for the pair.  They are about the only ones that are self contained and require almost no special set-up either.  I only needed to drill one hole (on the driver's side.)  The passenger side fit into the stock hole.  I did drill the roll bar down-tube holes several sizes larger to accomodate the larger shoulder pivot bolts, but they don't really count as new holes.  I wanted to keep the floor mechanisms pointed forward as much as possible so that the locking mechanism worked properly.  Since the drivers seat slides, I had to accomodate room and ended up mounting the new floor mechanism farther back than the stock hole.
The stock arrangement when pulled out of the Chevy, was for the shoulder pivots to be mounted facing inward, not forward.  It was most convenient for me to do this too.  Since I am using 1/2" diameter bolts, and it is bolted through 4 layers of roll bar tubing (2 tubes), I am not worried about it breaking.  After all, these are just pivots, they don't take all the stress in an accident.  The belts have to pull up on the floor mechanisms too.
With the way the shoulder belts are connected, they are farther back than a similar stock shoulder belt arrangement, which should keep me and any passengers in the truck better in case of an endo or flip.  They still work for my 5 year old son without needing adjustment either.
Unlike the seats, I didn't have to switch the drivers and passengers side.  If I wanted to have the shoulder pivot bolted in the front of the bar instead of the side, then I would have switched them so that the shoulder belt wasn't twisted.
The lap connectors bolted right into the stock holes.

e-mail me at i6735189@wsunix.wsu.edu.

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