I need to rebuild the foam for the seat, but I don't want to pay 100 bucks to order the pre molded foam. Does anybody have any experience shaping a new seat from scratch. I think i can save the bottom half of the foam and add layers of new foam to the top. Does this sound like a good idea? Any input would be great, especially what foam would be best and cheapest. Other forums suggest going to an upholstery shop and getting seat foam but others say that carpet padding would also work. I was going to use spray adhesive to layer the foam on top. Any thoughts? I did find a replica seat cover on ebay for 35 bucks so that is a plus.