Hey TrainBub,
I gave Scott info on the Mopac SD40-2c units assuming they would prefer to make later versions with dynamic brakes as most roads had DB. He passed the info on to Jonathan. I'd be OK with non-DB as well, but prefer the late/modern version on either DB or non-DB. If I've missed anything, please let me know. Here's what I provided, much is courtesy of Kevin Eudaly's Missouri Pacific Diesel Power:
All Mo-Pac SD40-2s with dynamic brakes (#6000-6073) were delivered in the Jenks (dark cerulean) blue late scheme with the screaming eagle over sawblade logo on the cab, wider 5" Scotchlite striping & chevrons, large cab numbers on the long hood, and corrugated radiator grilles (no chicken wire grilles). They all had bells mounted high on the long hood before the left-hand radiator grille.
20 DB units made in 1976 (#3216-3235, renumbered in May, 1978 to #6000-6019) had both standard cab lights between the number boards and lights on the short hood (like DRGW SD40T-2s). They also had rotary beacons on the cab roof and early EMD-style squared numbers on the number boards.
BTW, sorry I can't reserve any Sunset GP7s or GP9s in Jenks Blue. In my RR universe they were already traded in on GP15-1s. I've already got four painted and ready for some local road-switching work on the future layout. For now two baby tunnel motors are pulling a local around my office loop. FYI, that's an original 3M Scotchlite Mopac cab logo in the pic.