I have an 87 k5 with a 305 TBI, 205, and some 4 speed (L,1,2,3,R). I want to put in a 4 speed auto. Anybody out there know what all is involved with this? What I am unsure about is: 1.Will the transfer case, drivelines and any mounting brackets bolt right up or do I need to do some parts chasing? 2.What about wiring? I have seen an 85 that had a 700 but was replaced with a TH350 and you could see the old plug hanging down. What all does this plug do and where does it go? Is it an electronic kick down or does it communicate with the computer?