I have the 4.3 in my trike with a short 350 turbo with the lock up converter. I shortened up a old ranger rear end and have a 10 inch drive shaft. Plenty of power but super bad MPG lol. I carburetored it with a two barrel and HEI ignition. Its the older 4.3 with the roller cam and non vortec heads. Im really thinking of putting the tbi set up in it this winter but not sure as of yet.