Ah yes the 5 spd tranny grinds - you need to have that looked at soon before it totally tears the tranny apart. The front main bearings are a common fail, as well as other parts that will cause that noise. You can get a rebuild kit on ebay, or most of the parts are still available from a mitsubishi dealer. The issue with the mitsu dealer is that they did not import these trucks as mighty maxes until 83, so trying to get them to look up the parts may be tough. Be sure when you order the parts you specify the year and engine size - the internals are different for the different years and engines - they are not the same. Welcome to the forum - looks like it survived pretty well for what its been through.