5.7 crank end-play

I don't think Plymouth 65 realizes G3 Hemis use TTY main cap bolts. AND smaller cross bolts on all 5 caps. A main cap will not move unless the cross bolts are also loosened. The cross bolts are not TTY (21 ft-lbs)

The thrust is taken by #3 but the bearing is not flanged like a typical engine. All 5 main caps are numbered and an arrow indicates direction of installation. The #3 main cap is basically the same as the others but the upper part of #3 bulkhead is machined to hold special thrust inserts, one on each side of the bulkhead. These inserts are held in place by the crank, main cap and unique design of the inserts. These inserts are what controls crank end play.

I don't have direct experience and the above is from Shepard's Hemi book.

You could try reaching out to somone like MMX, Johnnymac, Arrington of Bouchillon for a definitive answer.