If you have around $70k laying around, I'm sure WC and Barton would be happy to sell you one. You could post on the SS/AH thread and see what you get there. I seem to remember Mark Howes (CANUCK on here) told me they get 8-10 runs on intake springs. They seem to have problems with the intake valves breaking, so I'm sure the valve covers come off after every run. That is why WC put clear windows on the top of his covers. I used to want to run SS/BA with my 1964 Belvedere. Too much money for my budget. NSS is looking better everyday after watching the SS/AH go Jr. PS.