On my 58 half ton with a 235 the shop manual calls for a special lock washer for the rear engine mounts that bolt thru the bell housing. One of mine on the passenger side was missing. I thought the bell housing bolt holes were threaded so I thought I threaded the bolts thru. Some how one fell out. When I removed the engine and installed the new engine I do not remember there being locks and nuts on the top side of the bell housing legs. Anyone know what lock washers they are referring to in the shop manual.