I'll put each of my vehicles in their own spoiler tags to save space on the page.
Buccaneer:
SpoilerBlade:
SpoilerGauntlet:
SpoilerPhoenix (I based it off of the Trans Am 2000 from Redline):
SpoilerSabre Turbo:
SpoilerBuffalo S (not in the muscle category but it's still a muscle car to me):
SpoilerTornado (early American muscle IMO):
Spoilerall that and no Vigero?
Used to have one, but I lost it to a cloud save problem about a week or two ago. I just remembered I still have the pictures floating around so here they are: