With the engine finally back between the framerails, I could finally put a lid on it. The TDC mark on the flywheel appears to be a few degrees off actual TDC. I rolled her to TDC before it got capped and noted the discrepancy on the mark. Copper coat on the head gasket and a bit of high temp thread sealer on the head bolts. Torqued all 18 headbolts to 35 ft//lbs from the inside out in the same pattern indicated by the factory manual...and I gapped the spark plugs