My concern with a basic passenger car block is how much meat there is for the lifters when they're taken that much further out plus the OD of the bronze bushing for oil control. Here's what mine look like with a standard 440 block, .904 lifters plus bronze bushings.
 I recently saw a hemi block w/ lifter bushings that broke the whole lifter boss off.  It was an early megablock that didn't have all the extra meat cast into the bosses. It broke on either #1 or #2 cylinder...can't recall exactly which. I assume you are talking about the same one I am about to post. This was a Local guys Hemi. Yessir! The one Wayne built. Not a lot of meat there at all. HUGE difference in that block versus the style that turbobitt posted above.
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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