Summary

HO generic double stack well car uses truck: http://www.thingiverse.com/thing:426812

Updated version of: http://www.thingiverse.com/thing:667889 . Runs on standard HO track. Remove extra material from ends. It is there only to enable printing. Add detail parts and paint as desired. There are three options for mounting couplers and trucks using washers or/and custom adapters provided. Holes sized for tapping to 6-32.