FWIW...I have the Indy valve covers on my hemi...not the ones w/ the clearance notch built into them. I heated and clearanced the inner fender near the shock stud w/ a BFH. I removed the heater & blower motor assembly years ago, so I can't comment on clearance there.

hemi 1.jpg

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