I could use some suggestions as to what would be good to use for a seat in my 35 5 window .Thank you.
Build one! Use the original design and build a metal base to bolt to the floor and construct the back and seat out of wood. Cut and cover the frame work with high density foam and shape to your liking. Not a hard seat to build.
I have a '37 seat going in my '35. I need to get a little clever with the floor brackets since a '37 seat is flat but I think it'll work out nicely. I want to build it so the back flips up like an original.