I see your point Mike... 19's vs 16's I believe, will change the gearing and would make a few tenths difference. As for the N/A vs the SRT6 in a slalom, the SRT is at a disadvantage. When playing in the curves of TN, the 6 speed's gearing will stay with or even pull a stock SRT6. The reason, is I think the low end HP is probably the same. We need the boost to get going, and those short bursts just doesn't give you time to bring on the heat, until a straight a way...then it changes....lol