help me please
it is a performance trans. that can handle 650 ft. and i bought it from australia so please i need some one to tell me what can i do should i swap my 4l60 to 4l80 and what should be changed if i do this keep in mined the money is not an issueand i need somthing to handle like 1200+ ft we spok with you guys and you recommend the 4l65e now my q. what is the diffrance between 4l60e and 4l65e?






