Can anyone tell me how to model these locos[?]
Athearn makes a R-T-R SD40-2 in the Union Pacific desert scheme. As far as the Olympic Torch SD70M, I think OMI produced it in brass a few years ago.
I think #3592 is an SD40-2, and 2001 is an SD70M.
The SD70M you can get from Athearn Genesis, I believe. SD40-2s are available, in various levels of quality from Athearn, Kato, and BLI.
Of note, I believe that 3592 was probably repainted before 2001 ever showed up on the tracks…
Or is it you just think those are cute locomotives in your signature, and you actually do want to model the MK5000C’s that Utah Railroad now runs?
Got news for you - total scratchbuild, probably from the trucks on up.
The only way to model a MK5000C is to buy an OMI brass model. making one yourself would entail a whole lot of scratchbuilding. i think I remember hearing of an article once on building one, but i dont know for sure.