Y'all are following the trail that leads to relocating the cylinder heads farther inboard to get the open valves away from the exhaust-side of the cylinder walls. If link below works, it'll take you to a pic of a head that Jesse Robinson ("RAMM") modified for an older EMC event to offset the head... looks like about .100" to me, FWIW. This is one of those things where other engines (non-Mopar) can have an advantage cuz their heads have the valves located closer to the center of the bore. IIRC, it's one of the revisions that B1 heads (not B1-BS) have compared to the OEM architecture. PICTURE