Zigen my friend.
I used the bracket on the 5th gen seat and as I recall they all matched up perfectly. I did not however get creative and try to fit our 4th gen brackets to the prelude seats. 4th Gen seats were not as "cushy" as the 5th gen I think, and I agree with the other guys about the 6th gen, i have sat in those and didnt think they were too comfy. I realy like the ones i have, they are from a 96 ex V6 four door. As I mentioned before they dont slide forward as far for people to get into the back, but the tan cloth matched mine almost identically. Hope that helps, let me know if you have any other questions. You can always start by going to a junkyard and looking pretty carefulyl at teh floor board of one to see what kind of seats will fit. Teh preludes were close, but off by like an inch. Pretty big diffference in the long run, cause you also dont want a seat that wont be safe if you are in an accident.
Custom mounting is always a possibility. I like the guys idea about those celica seats cause they are real nice but that will be tough, and that back seat will be really hard to make sit just right due to different dimensions. I think that's a rad idea and I know we'd like to see pics if anyone has any set ups like that.
And just so yall know, I did meet a guy with a 4th gen two door here in GA, and he had two matchign sets of Doge Neon seats in his car. Two up front, two in teh back seat and he jsut had a big sorta breeze way to the trunk with his subs. he said they were pretty comfy, but i dont think any of us even want to think about putting something from a Neon in our cars Peace Out Rut