Hello all. Just picked up a 91 loyale 4wd 1.8. The car is very clean and runs well. Got it home and it's leaking oil from the passenger side head. Looks like the gasket is blown out. If your under her, it's the aft lower corner of the head. How big of job is this to replace the gasket? I call a shop and they want $600 to do it. then he told me I would be better off getting a used engine for what it would cost to change out the head gasket. What do you guys think?