In fact, John removed a fully chromed 1962 Corvette Rochester injection unit to install the new TPI. The car runs smoother, stronger, more reliably, and jumped from 16 to 23 mpg to boot.

Read the tech article on identifying the differences between GM's Tuned-Port Injection units by year make and model.

The cream of the MPI crop is tuned port injection (TPI) kits, and this Holley Commander 950 Stealth Ram MPI system that can supply a small-block Chevy engine enough fuel for 300-670 hp.