I have a set of non-cryo Hughes on my Victor MW 511. They survived over 20 dyno pulls several of which were on nitrous making over 900hp. Bodies look good, rollers roll fine, no shaft galling. 240ish closed, 740ish open for spring pressures.

To get everything where it needed to be geometry wise it used B3R Racing's geometry correction kit. It worked well and setting up the valve train was very repeatable once we installed head stud insert washers into the shafts.

Pulled really good way past 7000 and idled like a 509 purple monster lol.