Chad, Front Range only made shells, not the complete locomotive. Anything you see that's already assembled is probably running on an Athearn BB GP-7 frame and power. As Josh said, they were the only correct width hood GP-7/9 until the P2K models came out. Without knowing more about the listing and how well the hood was detailed and the mechanicals, I'd say you're much better off with an Atlas or P2K model instead.