Hi all...despite the soft ground, melting snow and mud everywhere, I installed one of my '91 Integra seats into the sedan yesterday.
After much thought and carrying the seats from the garage to the car and back again and trying to swap rails, etc.etc....I came to a pretty easy solution...
The two rear bolt holes line up almost perfectly... but the front wasn't even close...the Integra brackets for the front turn in towards each other...and the Civic's brackets go straight down. The front brackets are connected to my Civic rails with two "permanent" rivets...and the Integra brackets to the Integra rails with one rivet and a spot weld. Three drill bits later (shoulda used a drill press

), I was able to remove the Civic brackets without damage while totally anililating the Integra brackets getting them off (haha..gotta love the grinder :greenchai ), but was careful not to damage the rails in the process.
After relocating the Civic brackets back about 3/4" from the "stock" location of the Integra brackets, and finding a short bolt/nut for each side to attach them to the Integra rails, they bolted in with just a little effort. Right now I only have one bolt in each bracket, and need to remove them to install the 2nd bolt/nut to make sure they are properly mounted.
Sorry, no pics yet...I got done about 8:00, and was too f-ing tired to pull out the camera when I got home. I spent most of the afternoon on the seats, but in between was helping the step-dad push a truck that hasn't moved in 5 years around his yard cuz he kept getting it stuck in the muddy snow and shit

. If anyone is interested, I'll do a "upgraded seats in a sedan how-to" along with the pics when I have time to add those add'l bolts. I'll need to remove the seats and drill one more hole in the rails so it'll be a good time for that.
These seats were chosen because they have the shoulder belt/roll thingie already attached to the seat, just like my motorized seat belts in the sedan, and although from the same year, the 91 Integra seats were in much better condition than my 91 Civic seats...I don't think you hatchie guys have that seat belt issue to deal with....
So...I'll wait for the weather to improve to get the passenger seat in...the GF's seat is in good shape anyway...she doesn't need the beefed up bolsters and shit anyway - lol