I may be "shoveling sand against the tide" of opinion here but I just used the stock 1955 seat. I had it sandblasted and powder coated, replaced the springs with a plywood backer and the upholsterer used modern foam to give it a more modern and comfortable shape.
I've been VERY pleased with it. Of course it bolts right into it's original location and it doesnt LOOK like the stock, sort of over stuffed factory bench.
