A question for those of you that have multiple MTH 6 axle Premier diesels. Is the frame size and truck spacing the same across multiple types of locomotives? For example is the SD60/70 frame length the same as the U30C/C30-7 frames?
The reason I ask is that I have one of the now defunct Big Dawg Originals scale E60 shells that are designed to go an a SD60 chassis. I've owned this forever, but finally thinking of doing the project.
If the GE frames are the same length I'd rather find a good GE runner as the donor so the trucks are little closer to the prototype. I realize I can swap side frames, but I have other engineering challenges to figure out.