1960 valiant slant 6 170 cu in

found my 60 valiant in a barn...partially disassembled... got her home and discovered a few missing parts. the last thing I need is an alternator bracket. problem is.... I have mounting holes already in the block....on both sides of the block....so which side does my alternator belong on?? i've heard they put it on one side then changed it mid year.....anybody got a bracket that mounts on the drivers side? thank you