Ky Speed did the work. Bluecat tuned it. no driveshaft upgrade shes been over 130 numerous times! Hi locked it from a dig multiple times, i go through a gallon of meth a week lol, raced alot of new mustangs and old but none tuned on E85 i heard they do good. but i have beat every srt 392 challenger, charger auto and stick ive come across. i give it a hard time its holding strong.