Mega Squirt is by far the most reasonable controller, as long as you have the know how to deal with it. But they have a forum that is loaded with very helpful folks so.....You still have to contend with the expense of the intake, which to buy one otc for a BBM they are around $700.....but you could always build your own. There is a member on here Turbofreek, I believe, that just epoxied the injector bungs into the runners. Keep in mind that with a dry manifold all of the single/dual place non-sense does not apply. EFI also likes slightly different cam profiles than a karbonator, so if you build a motor for a karbonator then switch to EFI later the cam will not be optimal.