Hey Otto, I'm running a 276" off center in this car. It's iron headed with a JC-45 on it now. Shoot me both of them if you get a chance. Just need one to get the car running..I can make any changes if need be. Hope to get it on the dyno in a couple weeks before I put a TH400 in it. Anxious to see what kind of hp loss, if any, i get with the 400 vs 200...I'm guessing 10-15hp..TIA Scott