(head gasket on these is done without removing the chain assembly and timing cover).
I really can't picture how this is done.
How do you remove the head and cams without taking the cam sprockets with it?
Cam sprockets are unbolted and have the chain on, tension is removed from the tensioner and the sprockets sit in a casting on the timing cover, head slides out and up (having disconnected the inlet, exhaust, water outlet, a few water pumps bolts, and some timing cover bolts.
On re-fit, crank t 90degrees before TDC (all pistons to the half way), head on, set the cams and lock them, bring the pistons to TDC and and lock the crank. Cam sprockets bolted on, tensioner released and tighten the bolts.