I've got a carbed 4WD '86 Burb with a small block. The trans is a TH400, with a NP208 'case. I've also got a complete stock '94 TBI 454 - has the accessories/brackets/pullies, complete wiring harness, and computer. I want the latter to be installed in the former. What all am I gonna need to do the job? The harness has many more connectors than there are things to connect to. I assume some of them went to the transmission of the donor, as well as other things like maybe a coolant level sensor in the radiator, etc. I already plan on replacing the 2-row radiator with a 4-row, and putting a bung in the exhaust for the O2 sensor.