I am looking for any information on the best system to convert a 1993 Suburban tow vehicle from the original throttle body system. The engine is a 383 (stroked 350) with a mild RV cam. I would like to hear comparisons on the different available systems, ie F.A.S.T, Holley...I have a donator TPI but it seems as though it will be almost as expensive to convert to that as the others by the time I change the wiring harness, etc. Any advice would be appreciated.