We did a 5.2 Magnum OD swap from a '96 Dakota into a 1984 Ramcharger. After looking at the wiring we decided to use the Dakota wiring. We just had to lengthen a few wires. We also never got the cruise control hooked up. The biggest problem was the CEL and speedometer. We solved both of those issues by using the cluster from a '92 truck. There are dual output speedometer adapters (mechanical/pulse), but I never did dig deep enough to figure out which one would work for ours.