There's no way for us to tell without pics of the motor mounts on the 40 and possibly the engine. I think 6=8 is Clifford's advertising slogan. They made a lot of 6 cldr performance parts for all makes and models. Most Chev conversion were either Downey or AA using a bellhousing to adapt Chev engine to a Toyota trans. It would be good to I'd the trans/tcase too. Maybe Clifford did something too.