I wouldn't go with EFI. I had a Sniper EFI on my '69 GT350. It was great for 4 years, but then it had an internal fuel driver failure. It dumped a lot of fuel into my intake and cylinders because of a false lean condition. These EFI systems do not have any programming or prevention built in if a failure occurs like OEM systems do on newer cars. When they fail, they can create a false lean or false rich condition that can damage your engine.