Bismillah and peace and blessings be upon the Messenger of Allah.. I have a four-speed Caprice transmission with an internal TransGo modification. I just bought the car and it has an electrical problem. I wanted to change the transmission to a 6-speed with the complete wiring harness due to the wiring harness problem. According to the previous owner, the transmission is clean, and the sale is easy, God willing. Four-speed