they all are mag engines... 318 is modified and the 360 is stock. elec. fuel pump in tank and yes i am going to carb intake w/ 4 bbl carb. I know about the flex plate issue and will correct that... I think it would cost more to try toreplace the efi than and go to carb system, I can still use elec. pump for the system with it supplying enough fuel to run it. I love all the in put thanks!