After our 1969 Pontiac Firebird was painted, we made the jump to Electronic Fuel Injection using the Holley Avenger EFI system . We were impressed with the completeness of the kit, that it came with not only the ECM, throttle body, and hand-held controller, but also the complete fuel system down to the hose clamps. We used an MSD Pro-Billet distributor for the ignition duties. After a couple hiccups along the way... mostly ground related, our Pontiac 400 came to life and the system worked perfectly. It's easy to set up, tunes itself in learning mod, offers datalogging, expandability, and more. The drivability is sweet, the power is instant, and the car exhibits refined manners. The Avenger EFI system lived up to Holley's claims and then some.