SundayShunter posted:"Is it feasible to kitbash a -2 from an Atlas SD40 ?"
Isn't the biggest problem the fact that the -2 is about 3ft longer than the SD40?
Yes, at least 3 feet longer, plus the trucks are different on the "Dash 2" series SD units.
When I got an Atlas SD40 I was intent on numbering it in the Soo Line's 66xx-series of SD40-2, mainly so I could have a four-digit unit to contrast with my other locos which were mostly 3-digit numbers. Once I started doing some research on the differences between the SD40 & -2, I soon gave up on that idea!!! My model ended up as SOO 755.