For c6 shifting comparisons, cilck the vid in my sig, My C6 is pretty built and shifts real firm If it was in a car it would probablly get rubber from 1st to second. In fact it did one time while I was going over an intersection and the rear lightened up over the raise in the road just as it shifted into 2ND, the tires DID chirp! it was cool,...
Hope it still shifts as well with the Cummins.
Congrats on the Moose Pump, It is good to see them getting out there and working as expected!