I just got done talking with Don at West Coast Classic Cougar about seat foam. He admitted he is as confused as I am about which foam is best for my '67 Standard and suggested I get another thread started here. Most of the other posts are way over a year old, and I'm hoping there is some newer information out there. Don has three different options of seat foam. Any recommendations from anyone who has used any of those options and what modifications were necessary would be greatly appreciated.