I remember Mopar carried different kinds for axle, trans., oil, etc... I think I used them all with success at one time or another. If this is a race only engine that comes out of the car and apart every year you could probably get away with anything. If you are depending on sealant to take the place of a gasket? I recommend The Right Stuff. For little tacky-tac here or there to help gaskets? Then use what is made for that app or The Right Stuff, sparingly.