@JET posted:My calculations say a proper 9' 10" truck would be 7/16 in. longer which seems about right when comparing a B&O AS-16 photo with my model, shot at a similar angle and aligned by body seams. It's off, but still looks ok to my eye especially with the larger RS-27 fuel tank between the trucks. You can also see the extra body height MTH gave their model to clear the can motor brass flywheels.
I agree, from this angle it doesn't look bad at all. A 7/16" difference would be noticeable.
I think is because the RS-27 has a 9' 4" wheel base which is closer to the prototype. Some of the 4 axle Baldwins and Alcos had trucks with an 8' wheel base. I think the MTH (and maybe also Weaver) sharks used these smaller trucks, and they look pretty odd IMO. I think here in your case, the difference is only an 1/8".
