I have a fold down 4th gen rear seat in my car now but I found a split rear seat in better shape and im wondering if its a direct bolt in? right now I have all 4th gen seat but I found a full set of 3rd gen black seats that I like better only problem is ive never had a rear split seat in my car .

 

The center on split rears have a tab they lock onto. You need to weld that into your car for them to work. Also, make sure you measure the exact spot to weld them onto or the seats won't fit right.

 

my 89 came with a split rear seat.your car should already have the inner mounts sticking through the carpet unless someone cut them off like i did..

 

It only has the mounts if it was a split seat car from factory or someone added them.