I don't think there is. a 428 would fit in if I could find 1. I'm just going to rebuild and turbocharge the 200, should make about 200 HP with approx 350 ft/ lbs of torque. I'm also going to add TBI fuel injection, and run a megasquirt 2 fuel injection controller, which will also control the ignition, using the purple and orange wires from the Duraspark 2 distributor that I bought, and putting them in the right connectors