What EFI setup are you running?

I started with a used Holley Commander 950 and ended up upgrading the ECU to the Holley HP

The Terminator, Avenger, and HP are all related. The Dominator is a different ECU. I VERY nearly went with Megasquirt

The Holley systems are VERY configurable. My HP is currently TBI, fired off the coil with breakerless Mopar distr. driving an HEI. The Holley can run TBI or multiport, and comes with a WB O2 setup.