Starting a BB Duster project

It just depends what you're trying to do. The Sniper and Super Sniper work fine but they are really limited in terms of IO. If you are just replacing a carb then it doesn't matter but if you want to use the EFI system as a data acquisition system then you won't be happy with the Sniper. The Super Sniper provides limited IO (3 channels of pressure sensing) but the Terminator would provide quite a bit of capability for sensors and control. Things like oil pressure and fuel pressure cannot be monitored with the Snper. The Super Sniper allows you to data log them but you can't see them on the hand held display. The Terminator allows you to data log and monitor them as well as a bunch of other things. If you're happy with a set of gauges under the dash then you might not care about this but typically once a person upgrades to EFI they then start to think about moving other things to digital control. Turning the fans on and off automatically, data logging engine parameters, controlling the automatic trans, drive by wire, etc. Spends some time reading threads on the Holley forum and see what you think.