When street legality is not an issue, a carburetor and big cubic inches is the recipe for affordable fun. C. J. William’s 363ci 351 Windsor is obviously not a low-buck combination, but with alcohol in the tank and nitrous assist, it runs 8.50s at 158 mph in the quarter. Duplicating those times with an EFI modular engine would take far more money and effort. For grudge-night drags, open-tracking, or street driving with an early Fox, you can dial this 351W/Mustang combination anywhere from wrecking yard cheap to all-out thrills. The 351 Mustang is a classic swap and for good reason.