I did a stupid thing! I checked my fluids before going on a two hour trip and forgot to replace my radiator cap. Engine lost fluid, overheated, lost power and shut off driving down the interstate at 75 mph. Cooled it off and cranked it over but it would not start. Pulled the #1 and #3 plugs and water was shooting out as I cranked it. My question is should I rebuild or just replace the engine?