Even if the front hood has yet some defaults (third 3D printing attempt!), I put the different parts on the chassis and to judge the unity; front hood and front cab made with resine, part in light grey (primer) made with ABS, chassis and fuel tank ABS too.
I also changed my mind about the paint scheme; I will certainly paint this engine in a lease color, much rare and never done in O scale (I think) than classic companies (UP, CSX, etc...) and easier to do too........
I really like this one:
And a light weathering will suit to this engine!
jpv in France