My factory seats in my '85 are shot. The drivers side (Rt hand drive) is missing lots of foam and is torn. I took guidance from this thread, since I am a taller person. I bought a pair of PRP seats, and used some angle iron to make them fit. I moved the drivers side back a few inches and also raised the front slightly to help give my legs some support. I think it turned out pretty good.
It's too cold for me to paint the steel, I will do it this spring. 