The Q6600 only comes in one speed and socket. 2.4GHz with 8MB L2 Cache, 1066MHz FSB, Socket LGA775
As for Trades, it depends. Offhand I could use a few Jamma Adapters or parts to make Jamma Adapters, Galaga HS Kit, Victory Road Side Art, 720 Bezel, .. Or if you are local, I have a couple of cabs that need to be sanded down and prepped.