Check the bottom part of your car for leaks. Check all hoses. Check color of exhaust. If it has white color it means you have internal leakage and you need the head gasket again.
manifold gaskets only need to be replace if they leak, or if the manifold has been removed for some reason
It will wear them out and most likely cause the head gaskits to blow again. It better to use new head bolts.
you have to take off the top two peices of the intake to get to it but be careful of the gaskits because they are over priced. there are about 15 hoses and about 5 wires to take off. I would label the hoses. and be careful not to over tighten the valve cover bolts only about 53 inch pounds
First remove neg connection at battery than serp belt than coolant than alternator than ps pump than alternator bracket and than electrical connectors now blow off all debre from area now valve covers and mount front eng use eng pull tool crank eng forward next pull upper intake and next use vAlve spring tool to remove push rods don't mix them up there not same. Length put back where they came from next remove lower intake clean mate area remove crappy gaskits replace with the metal and silicone style if you use plastic they will leaks agine soon reviese for install about 4-5 hr job rember change oil after job and before restart of engine very imPortant!!!!!! Purge air pocket from coolant