I've seen plenty of chatter about rockers from Hughs Engines. All good too. I have Crane Gold race rockers. They are aluminum. No problems so far but I'm going to get rid of them because aluminum rockers are not intended for street use and long duration driving. One thing I did when building my engine was go with the lightest valve springs possible to keep the valve train stress to a minimum. I worked with COMP to get what I needed. They set me up with springs that will probly float somewhere around 6800. I have the rev limiter in my MSD set at 6500. I think using springs that are stiffer than you need is foolish unless its a manuall trans with a heavy flywheel. A car with that setup can rev beyond the limiter if a gear is missed while hammering it.
