Bought this 1994.5 f250 4x4 powerstroke. IN the process of restoring it to its prior glory. WHile fixing a bad engine ground i looked up and saw what looks like two threaded holes in the engine crossmember and two matching holes in the center of front axle. I can figure they should be attached, dont know the proper bolt size or if there is a bushing or something that goes there. Any help would be appreciated thanks. evan