hey guys. i have a project thats been done before but i cant get a hold of the guy who did it. figured i would come to the forums here to the experts. i have a 71 cj6 and it came with a buick v6 225. i bought an 84 turbo riv engine and complete harness (engine, computer and under hood that has relays and all.). i was going to pay a mechanic to hook it up for me but he said it wouldnt work due to vehicle security system. i was told the vss didnt come in until the 87 model. he might also have meant the speed sensor. if i am installing this into an older jeep that has mechanical speed, what do i really need? i thought all i would do is hook up the power and ground, plug everything in, install an electric fan, and hook it to the starter/key switch. (plus of course fuel injection pumps and return lines.) what am i missing?