Carb choice

Thanks everyone, it had the 600 on it when I bought it.. ran it for a few weeks then blew the car apart.. it did have a .525 lift solid cam in it which I slightly toned down but I felt it had fuel bog so when a good deal came on the 750i bought it... it could have been poor plug wires and ignition, or the fuel pump being weak ( replaced with eddy), I think I will start fresh build with the 750 and see how it runs with the new changes to the engine.