HI. Can anyone tell me if you have to pull the engine, on a 1994 Sedan DeVille, to replace the front headgasket? It has the 4.6L N* engine. It has an external antifreeze leak and I am assuming it will need a headgasket and thread repair also. Would like to know if anyone knows if there is enough room to do all the work with the engine in the car. Thanks alot for any help!!