I am a new jeep owner and love it so far. It is a 2018 4 door. Looking thru the forum and topics their seems to be a lot of knowledge around. I am into street rods more than jeeps, but I thought I would ask some people that have been using the 5.7 hemi motors and dodge transmissions in the jeeps for some information. I have a 1939 Dodge truck that I have installed a 2014 5.7 hemi and 65rfe transmission in. I am having trouble with the trans going to limp mode (PO760 code). I was told by the builder of the wiring harness and computer that he had to use a 2010 computer to control the motor and transmission and would have to change the valve body out. The part number he gave me to change it to is for a 2014 and up transmission. Does anyone have any experience with this and if so would you care to share your experience. And Mods if this is in the wrong place or I broke any rules please remove it.