First off my mopar mentor(RIP) had 2 different GW dominators and they worked great on his 499 Indy 440-1 all motor bracket car and went high 8s.

SV1 - I run one! It works good! I first bought it when the motor was different and I broke a couple lifters and the engine is different now from when I bought it so I have done tuning on it and have been picking up. I lent the SV1 out to a member on here with a HEMI with more power than me and he has a 1250 PS dominator and my SV1 is 1212 cfm! He told me he went .05 slower with the SV1 (he can verify) but did not mess with my carb and his is tuned for his combo...since I have had my carb back I made a adjustment on back to back passes and I picked up 1.6 mph in the 1/8th . I have one of the early SV1s and still working on it.