I did a lot of searching for some lighter seats last year, and found that any modern seat either didn't have enough rake to it or if it had an adjustable recline, wouldn't slide back very far because of the reclining mechanism would hit the back of the cab. Though mind you, I'm 6'1" and would like my 6'3" father to also be able to get into the car
I ended up with economy fiberglass seats from Speedway.com, but in a couple weeks I'm going to try making my own creafoam bead seat just to see if I can do it. When I try it, I'll post about my experience.
Ben