I'm not hitting your type of power, yet
, but I wish I had gone with the TKO instead. The T5Z has been good, but I'm not happy with the first gear ratio compared to the stock T5 and for only a few hundred more I should have gone with the bigger, beefier tremec or TKO. Now I'm looking at the six speed conversion I read about in 5.0 M&SF a couple months ago. :P Maybe in a few years...