69 Couger Eliminator (Not Mine)

IIRC the Gurney editions were 428 powered, except for a few that came with a 427. The 69 Eliminator was available with the Boss 302, only a small number were built, and the Boss 429 was rumored to be an option, but IDK if any did in fact make it into production. All Boss 429 Mustangs were modified by Kar Kraft in Michigan to make room for the massive engine, I expect that any Cougar would have required similar mods as the platform was basically the same.