I thought I'd have a crack at a North Eastern locomotive, so I acquired a Bachmann AMTRAK GE E60CP. I got this free and it was kinda stuffed. Missing a truck and the contacts on the remaining truck were really bent out of shape.
I've nearly stripped the shell and I have biffed the Bachmann mech in the garbage.
I have a few Atlas 8-40C locomotives so I have sacrificed one just to see if it would fit.
It needs a lot of milling to make it fit and it needs to be lengthened a bit.
So here's some pictures of one side partly extended.
Notice that a huge chunk of metal is missing from the top where the lightboard slots in.
Somewhere on this forum or Atlas is Daniel Leavitts thread about improving the Bachmann E60CP but I'm buggered if I can find it, I also checked trainboard too.