I just installed the driver's side in my YJ, it required extesive modifications to the (Rugged ridge) fold forward seat riser. It too was brand new, but i had to cut it apart & shorten the front links to lower the front of the seat. I also had to cut off the tabs & move the riser inboard to the rail holes.
The seat is sweet though, & will work with the stock seat belts.
Now i have to find time to put the passenger seat in.
This price is for two seats, (both sides)
Reclining Racing Seats - JCWhitney
I also got these belts, & love them too.
4-POINT HARNESS SEAT BELTS