I haven't assembled it yet, but Dwayne Porter (fast68plymouth) spec'd a hydraulic roller for my dad's 540" hemi project and we went w/ a set of Scorpion hydraulic roller lifters.
I've been VERY pleased w/ every other cam/head/valvetrain combo Dwayne has helped me with...no reason to think this won't work great.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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