Remember that Mustang test vehicle with the gigantic hood bulge? Well that car is hiding a 7.3L V8 with a manual transmission underneath!

Ford stuffed a Godzilla crate engine underneath and before that it was a test vehicle for different Ford parts.

Ford Performance allowed YouTuber REVan Evan to reveal the build, confirming that swollen hood hides a 7.3-liter V8. A Ford official explained that the GT350-based prototype had long served as a testbed for a variety of parts and that before being fitted with a 7.3, it had just been sort of sitting around unused. That made it the perfect recipient for a prototype Godzilla crate engine, which pairs well with a Mustang for obvious reasons.