So an update on this situation. Sorry folks, but i have failed. I managed to troubleshoot the cause of the issue to a leaking radiator, which caused the engine to overheat, & blow the head gasket. Got parts ordered (head, valve cover, thermostat, exhaust manifold gaskets, thermostat, EGR valve, temp sending unit), & had the radiator repaired. Started the teardown process, & have been stuck on the last of the exhaust nuts near the firewall (friggin attached bracket blocks any tool i possess from reaching it). After two months, i'm getting smart, & taking the old girl to a mechanic who knows how to address this issue. My apologies to you all, but replacing a head gasket is beyond my expertise- even with the aid of three different manuals. Thank you all for your advice, suggestions, & information freely given.