we did the 383/727 in my son's dart with a load leveler. Really had to angle the engine/trans to get it into the car. I've seen lots of people install engines with those plates, but i can't get beyond the fact your holding up a very heavy (and probably expensive) engine with 4 studs going into an aluminum manifold with 5/16 threads. Cast aluminum isn't the toughest material and a used manifold is bound to have a damaged thread or two. Imagine the studs pulling out and dropping your expensive engine and crushing the radiator support......... I just sleep better using bolts into the ends of the heads.....
