Im really surprised your looking here, when I was looking into the 426 kit, most info came from the dak crowd.

The hughes 426 kit was one of the best machined out of the box kits ive ever gotten A+.

Now im on a 440 small block stroker and that should be a bit mo-better if the heads are right.

From my research and I cant say ive driven one yet, but many say going over the 4 inch mark is like driving a whole different beast as far as strokers go, most this is from the dakota guys as well.

But as far as the hughes kit fitment...it was right on.