I have an mpc era u36-b that I was playing with as a project loco. That long hood is quite narrow. I started a project to fit the shell to a wbb gp-9 frame with dual can motors and add dcs, never quite got finished, but I am pretty sure if you want two ac pullmor style motors in one unit you are going to need a full with hood unit like an Alco PA or something similar. If you go with twin can motors with flywheel route like me, the next issue is the height of the rear motor hitting the inside of the radiator boxes in the u36 shell. I found these are hollow boxes. I carefully was able to grind them off the inside with a dremel tool to make room.
I really should get back to that project on of these years - its probably about 80% done!
