Here's your VIN number CS149 J 864449 break down...
C = Conventional Cab
S = 6-cylinder engine
1 = GVW range (3900-5800)
4 = Model (Pickup)
9 = Year (1969)
J = Janesville Assembly Plant
864449 = unit number starting with 100001, so you have the 764,449th unit built for the 1969 model year from the Janesville Plant.
The smallest 6-cylinder available in a C-10 in 1969 was the 250.
Mike B
