i had the t6s...for a while on a stock motor, and just recently switched to the rockets...and i was very impressed. i didnt notice much if any loss in bottom end. and they just pull forever its kinda hard to imagine it getting any faster lol. i like the rockets alot better then the t6's. one for performance and 2 for quality i think the chrome on the rockets is ALOT better the the set of t6's that i have.