My wife's dad said he found a 1996 Lincoln Mark VII with this engine in it. (I personally thought the Mark VIII with a 4.6 was out by then but that's besides the point) He's trying to find me an engine for a swap out on my stang. The only thing is that on the top of the manifold it says "5.0 H.O. M". The "M" was in caps but was in a smaller print. He doesn't know what the M means and if it will make a difference. Only thing I can think of is maybe it was a police interceptor engine with bigger injectors or something. Can anybody help me??? Thanks!