No Compression

Pulled the head was previously rebuilt in 85' parked in 99' ran for 14yrs sat for 14 more rebuild has .30 pistons and there's no telling what else was done but there is a stamping for the rebuild on the front of the head. Everything cam apart easy hopefully goes back the same. I pulled the exhaust/intake manifold as one. Can it be assemble back the same? What else should I be looking at while this top half of the motor is open? The timing mark on balancer is dead on TDC on cylinder 1. So the timing chain was done right which is good i was worried. I will pull the distributor later on and see if it is facing number 1.