or anyone else who knows more than i do. I really admire your knowhow and writeups Sixliter, i've been looking at all the ignition upgrade ones. Anyways, all those writeups seem to be directed to EFI engines, i've got a carbed 351. Will the same basic coil, cap, rotor, wire, and plug gap mods work on that too? If that question is too stupid, what about bumping up the timing? Any differences with the carb over efi? What kind of mileage are you getting Sixliter?