If you read the whole story you would've known that [You Loze] had his mechanic install a set of Z1 stage 3 turbos, which equals the JWT 700BB turbos physical size and shape. Apparently, there was a problem fitting it on to the engine. If "YouLoze" had given his mechanic a copy of the JWT 700BB installation guide found at the JWT's website, he might have prevented the whole ordeal. Or at least would have known there would be minor fabrication to make it fit. (grinding of engine block for clearance) Just a thought...