Hi folks. I have a Flathead Ford with an Edelbrock 500 4BBL. It was running okay, but I'm aware that the vast majority of people will say it's too big for the engine. As the engine is now in bits for a re-build, maybe it's time for a re-think. So: A) Would the 500 Edelbrock be a good performer IF it were correctly jetted to suit on a rolling road? B) Would buying a 390 Holley be a better choice? C) I already have a Carter AFB Performance Series carb here, what's the CFM rating of these? (Remember these, the one with the badge across the front "Carter AFB Performance Series" popular about 25 years ago?). For info, my inlet manifold is an Offenhauser and currently has an adapter plate for the Edelbrock. (Would an Edelbrock inlet be better?) Engine spec is: 8BA, +.125, 4" crank Isky Max-1 cam Edelbrock heads Aluminium flywheel MSD distributor Fenton headers Block is currently stock but will be getting ported, polished, & relieved, plus the inlet & exhaust will be port matched.