For what it's worth........
The 496 RB stroker ate a Hughes hydraulic on break-in in the car. Was told NO warranty - race part, I've never raced the car and it never left my driveway??? Installed a Comp Cam, broke-in on dyno, did several dyno pulls, cam was fine. Decided cam was too small, put in larger Comp Cam, put engine in car, fired it up, and all was well. Hughes has since switched cam suppliers.
The engine does have a set of Hughes 1.6 ratio aluminum rockers with approximately 11,000 street miles on them, no problems to date.
I still refuse to purchase from them to this day.