I'm building a 351. So far, I have the block bored .040 over with dish pistons, a mild cam and higher compression, 1970 heads. They are shaved .040 and ported. I'm also running full rollers. My question is... Should I go back to EFI or switch to carb? I do not know to much about EFI and my concern is about running lean and burning up the valves. Would putting in larger injecters solve the lean running condition or should I go back to old school? Any help would be great, Thanks!