Mine too....and yes, the idle quality is great once you're done running it @ WOT over 6000 rpm for a while. NOT! Heheheh. Okay, I blame my bad rod bearings.
I believe SOLID rollers were what was being eluded to. Hydraulics just couldn't take the abuse....no, scratch that. The valvetrain couldn't take it, and your spring pressure would have to be even MORE ungodly than NASCAR engines already run at.
I'd love to see the track speeds in NEXTEL cup racing if they were allowed to use solid rollers, btw. They need to ditch restrictor plates, flat lifters....ugh, okay, sorry, I didn't mean to try to hijack the thread, much less discuss NA$CAR.
FWIW, the real prize to find is a roller-ready 351W, produced for a very short duration for the early lightnings (1995-1996 if I'm not mistaken). Thar be the pot o' gold!