Anyone know what application of these is gonna work best with Holley's Commander 950 engine management system? I no longer have a knock sensor to install with it and the knock module is from the 305 and don't really wanna use that. By the way, it's for a HSR 383. Were there differences between the TBI and TPI senors and modules? I'm not really sure and wanna try and get the right ones the first time. I'd call Holley but if anyone has tried to call them, they probably know that it's a bitch getting the right person on the phone over there, plus it's Saturday.

Tom