I've always done 3rd gear pulls on my car..... Dyno guru's help me out here...IIRC, you want to use the gear closest to the 1:1, but not go over, right??? Sort of 'The Price is Right' of transmissions??
Ragetek went 10.51 once in a 5 speed. Thats the quickest time Kevinwarren went 10.5 in an auto Bayshorepower [DCR car] went 9.4 in an auto