i was wondering if anyone has the zippy stealth kit, and the trailblazer converter. also who has both installed on a naturally aspirated 5.3 liter truck. if so, i would like to know if anyone has the part # for the converter. This is for a 2005 silverado. I would also like to know which "tune" you are running with these. i am looking @ the nelson perf. tune. i currently have a superchips, but it will soon get removed once this is all settled. thanks for the information.