I have just started selling stuff on ebay, and I am amazed at what sells. I've got some GT40P heads also for sale, 2 weber 48 IDFs (many other 302 parts, see my other auctions). You would think the heads would sell quickly, but no I've gotten 15 bids on the carbs. Started out at $10, they are up to over $100 /ubbthreads/images/graemlins/ooo.gif. I've sold other pieces of motors and hand tools that you couldn't give away and someone will pay 30 to 100$ for them. Go figure!!
Bill