Ok small update on one of my horrible ideas.
With SOME modifications, you can get a FVM GP60M shell on to these mechs. I have not attempted the 60M/B as I only have a pair and I am not willing to modify those... yet?
Basically all I did is removed the cab light block and cut the sill towards the coupler box mounts. Of course If i want to remove the shell, I will have to remove the coupler boxes first.


It does seem the the FVM Light pipe front and rear fit and work ok without modification.
Granted the fuel tanks are too long, trucks are mid at best but at least the FVM shells are an upgrade.
I have had no luck adding sound to a factory stock FVM GP60, no room for a speaker without milling a frame and loosing a fair amount of weight, no drop in decoders that fit the weird light board.
For me this will have to do until ST decides to drop us a bone with a new GP60/M/B.