My motor has Mopar Mega block. Don't know whose crank but it was purchased from Indy as a short block well over 10 years ago. It's been in my motor 5 years. The 4.5" crank has a Pentastar stamped in it. Not a pretty "finished bull nosed counterweight" piece. Looks almost like a factory 440 crank. It was used when I got it. I've put around 550 passes at 7000-7200 rpm. Never had an issue. Motor makes somewhere around 900 hp. After my last tear down (300 passes)the rod bearings looked new. Mains were ready for replacement, but not horrible.
Doug