I was running hot, lost power and my 77 Maverick stalled. Turns over but doesn't start. Head gasket is leaking. No water in the oil. #4 has 0 compression and 1,2,3,5 and 6 are at a low 75. What is my best course of action? 1. I can pull the engine and possibly savage what's left and repair it. 2. I can swap it for a new 1989 Ford Thunderbird 3.8 fuel injected. Any advice on this helpful.