I just purchased an Edelbrock intake manifold, edelbrock performer 500cfm carb, and air filter assembly. I have a early 89 range rover that runs very well. I want to remove the body and put a series IIa on. I have one donor 88" and another for the tub streching and such. I want to know if I have to get a new distributor and coil. Does the rover dizzy only work with the efi computer?