I went with FAST XFI Street EFI. I looked at several and they will all work better than a carb when you get it dialed in. The key thing to remember is that it will take some time and many hours of datalogging to sort out the fuel curve. This includes at many different outside air temperatures, warm up, acceleration, "pump shot" curve, and a few others. It is well worth the time though, and kinda cool to be able to change fuel delivery with a laptop. Do not get one of those self tuning kits, it takes too long for it to learn for each change you make, and it can't datalog. If you have tuned carbs, that will come in handy because the goal is still the same. The wideband O2 sensor is handy to use, even though mine runs better a bit richer across the board idle, cruise, WOT than pure stoich theory. Aftermarket EFI is one of the best things that's happened to the hot rod world Be sure to do a good install, then have fun tuning it.