great question for me to answer.... right now i just ordered the same shift kit through aps precision. right now there is an update that trans go is coming out with. this update delayed my order so i called wayne at aps and he gave me the low down. this update is supposed to eliminate the transisters, i believe is what he said. and for $50 more he is sending me the updated kit along with special instructions that he tailored for me, after i told him what i have for a set up, to modify the valve body for my truck. wayne there at aps is one of the engineers that has tested this new kit. he stands by it with 100 % confidence. he actually installed it in his jeep and said it changed the whole attitude of the vehicle. very friendly guy. should be getting it this week and i will have a write up on the outcome hopefully by the weekend.