The highway test is mostly a success. Got her up to about 60, hubs locked in 2wd, with only very slight vibration. Enough that I don't think I'll care. Any thoughts on if a very slight vibration can cause damage to output or pinion bearings?
Not much I can do to get rid of it other than a high pinion and/or cut and turn. Gonna be a while before I have funds for that...