I had a 3 circut Dominator on a Cleveland and it idled great & ran faster using nitrous when compared to an 850 Holley I tried on nitrous. But straight motor the 3 circut Dominator had a dead spot or sag in the first 60 ft. I got some annular boosters for it from Barry Grant. They said this style booster would help with this problem (better signal), but I never got to try them.