Beautiful Mack but a bit too old for most the folks I know. Everyone I know is into post WW2 up to 1986. Lol.
Best thing to do if he hasn’t done already is to get ahold of the ATHS and put an add in the “back lot” section of The Wheels Of Time magazine. Or post it on Just old Trucks web site. Lots of antique Mack folks on there.