Would putting oil additive like zmax be good or bad

I'm clearing out the garage to prepare for a move and want these SQ parts to go to someone who can use them. All prices are "or best offer" as I need these parts gone.     Driveshaft *Rebuilt w. GMB U-Joints (the good ones) $50   http://i39.photobucket.com/albums/e161/steve7672/C6668BC0-208F-46F1-9951-717548262823-38527-00002071E17F6B76.jpg   http://i39.photobucket.com/albums/e161/steve7672/72966FE0-AB0F-480D-A654-9FDD323CE584-38527-00002071EA7F02DC.jpg     Starter & Alternator *Both used fo

Hi All,   I also have an aftermarket intercooler that I THINK is a direct fit for the SQ. It MAY need slight modification, I purchased it from Spencer (gtxthunder) a few years back and never used it so I don't know too much about it. All dimensions are pictured and it is a straight fin style. Asking $350   http://i39.photobucket.com/albums/e161/steve7672/IMG_10071_zps8e2562ec.jpg   http://i39.photobucket.com/albums/e161/steve7672/IMG_10061_zps6f573076.jpg   http://i39.photobucket.com/albums/e161

I need one ! For a 87 starion shipped to 01013