Dang, if you're going to replace the cam, intake manifold, plus dumping the carb and going with EFI, and then crossing your fingers and hoping that it has the manners you're looking for, you might as well just pay blykins to build you a nice, low cost, 390 FE. That's pretty much guaranteed to give you what you want and it'll look just like a $25K side oiler. Just sell your 427R to someone else.