If it was removed then YES.
The gasket for a 1997 pickup was around $40.00-$50.00, if i remember right and that was at NAPA.
To replace the valve gasket on a 1995 Nissan pickup, first ensure the engine is cool and disconnect the battery. Remove the valve cover bolts and gently lift the valve cover off, taking care not to damage any components. Clean the surface where the gasket sits, then place the new gasket onto the valve cover and reattach it, tightening the bolts to the manufacturer’s specifications. Finally, reconnect the battery and check for leaks after starting the engine.
400.00
The way to replace a door handle on a Nissan pickup truck can vary depending on the year of the truck. There are several tutorials available online.
your head gasket is probaly blown.
napa auto parts
Sounds like you've lost a head gasket.
maybe ablown head gasket
call auto zone and have them look up both parts and see if part numbers are same.
you buy a manual and read the section referring to head gasket installation.
Is it the 86 or 86.5?