When you think about how long the B series Macks were in production and how prolific they were, IF theres ANY vintage american truck that would stand a chance of selling well as a kit, its the B series Mack. Its honestly not on my personal top ten list of vintage trucks ( I would buy a bunch, regardless), but I am not gonna waste my time suggesting someone kit a U series Autocar, or a A Series GMC, that would be foolhardy. But the Mack is a marketable kit IMO, or a GMC Cannonball.