Street Demon 750 or the 625? I can give you some pointers on dialing in those Street Demons if you need to. They're almost like an updated Thermoquad. And stupidly simple and I've rebuilt a many Edelbrock Performer/Carter AFB. Except I think the old thermoquads were just a tad slight better once they're were tuned in. (The wonders of a 800cfm carb that even a meek 318 can run)