I'm building a preformer RPM 355, everything is there except the heads. I have a set of re-done 64cc heads from a 327, what i was wondering will these be OK with the RPM cam and 750 carb? or should I just not even bother until I have the matching heads. Obviously I wont get the full effect of the RPM engine with these heads, will they even be able to handle the 750 cfm carb? I do have the correct RPM camshaft. Any advice would be helpful.