I wanted to ask for some advice/suggestions on possibly converting GGD Super Chief cars (1937 and '38 sets) from 3-rail to 2-rail operation.
(1) What wheel sets are available/recommended for a 2-rail conversion, and do the stock GGD trucks use ball bearings?
(2): Do the 3-rail cars already include mounting pads for KD couplers?
Thanks for any help or advice!