I personally have a Scat 9000 crank for a 383 in the works, and every journal measured good as far as being concentric and no taper. I haven't checked the stroke yet, but from what I've seen so far I don't expect any surprises. I haven't got the rotating assy. balanced yet either, but if it needs balancing work thats not Scats fault because I didn't get the pistons from them.
I bought the Scat after doing a lot of research and getting various recommendations as well as hearing a lot of negative things about others.
PS The Scat is steel where the 305 is cast iron.