Hopefully the engine is fixable but in the event that it's not you might be stuck in the same rut I was last year which took 8 months to sort out. The 79 is a split year for engines with loop or pin glow plugs as well as york or R4 compressors which was hard to find. I gave up after finding a nice low mile motor and just changed the car to a fast glow relay. There were also issues with the throttle linkages since the newer engines have the rotary throttle instead of the older firewall "pull" linkages, the exhaust manifold, and air filter due to the air conditioning hose.
But let's hope that's not the solution in this case.
