/6 rebuild advice

I changed the rear main seal in my 1964 slant when I had the oil pan off (lift engine 3" above K-frame). Not hard. The seal is in an aluminum block, separate from the main bearing blocks (unlike the V-8's). Same PN as Hemi engines. While the seal block is out, verify the tapped holes for the oil pan bolts aren't stripped (common) since a chance to fix 'er with Helicoil insert. I'd also replace rod bearings while in-there since often show dirt tracks. Pull one main bearing cap to check. If still silvery top coating, it is fine and likely the other main bearings are also. I used a silicone pan gasket from Real Gaskets of TN (also valve cover).