My World aluminum block required a head gasket that had different coolant holes on the bottom row. I got the correct part no. From Rich Nedbal AKA Mopar Rich. I had to order them from Cometic.
Mark Sounds like the KB gaskets also. The KB block has the outer row of steam holes relocated away from the bore requiring a special head gasket and relocating the holes in the heads.
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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