Williams late production E60's - not long ago - were made with real Wms frames, Wms 6-wheel trucks and 2 DC can motors. Same basis for most Wms 2-motor diesels that have been made for years and years - solid, good runners, good models so far as they went - and they went not quite far enough as they were shortened.
These modern production pieces just cry out for finding a separate body (they are around - I have one), slice-and-dice the 2 bodies correctly into one long one, splice the frame, add ERR command - and, boom, it's the loco that MTH didn't build. Pretty much. Improve the detailing to your heart's content.
The EMD 6-wheel trucks (used on the Wms E-7) are not actually accurate, but have a look that subs well enough, I think. Or, even better - find some GE truck side frames, mount them, and that's done - proportions generally willing, that is.
