and am getting ready to drop it in my new Superformance. Mine was built by Keith Craft and is bored and stroked to 496 c.i.
You can look in my gallery for pics of Keith's shop in Arkansas and dyno sheets. Keith is very complimentary of the Genesis blocks and has built a few of these for folks in the Dallas/Ft. Worth area.
I have heard only positive comments on these blocks from the owners I know.