For looks, maybe a Friesian.
To match the whole made-in-the-US muscle car thing? Quarter Horse
'Shells'
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high-fives Juliana
Quarter horse was my first thought too.
high fives Anne right back
I love Quarter Horses.
Cool...thanks.
Okay, next question, which of those horses could one insert into the 1830s Wild West without too many questions? I mean, I don't think it has to be a canonical Wild West horse, because there's magic involved in the transformation, but nobody's freaking out at its existence so far...
That doesn't mean he couldn't swing by and be Daddy...
I don't think it's too much to ask. IJS.
The quarter horse was the main horse of the cowboy era.
What Ginger said [link]
Quarter horses would work: I would go with a reining or cutting type quarter horse - but possibly with less extravagent mane and forelock. (The extra hair is mainly a current style. . .) [link]