So you general feeling is that I would need a BB Throttle body, a Holley throttle body, or other aftermarkets stuff to make the EFI work on a 350. Sounds expensive. Well, my choices are limited then. Either a 355 with a carb or a 305 with the EFI. I just can't be sure I will make much more power with a 305 then it does now and I hate dissapointments. Thanks again. Igor.