I just put a tko600 in mine and the guy who installed it insisted that I get the steeda triax shifter and get rid of the tko shifter. He races foxbodys exclusively and has been through all the shifters they make. Tri-ax was his favorite. I'm glad I went with it it's sweet! The stops are suppose to help keep the transmission safe so I wouldn't be racing without them. What engine are you dropping in?