I have never known any of the aftermarket vendors/dealers, to carry much, by way of NOS parts. The vast majority of the parts offered are imported reproduction parts. As the '60-'66 Chevy/GMC trucks, Panels and Suburbans become more mainstream, relative to the '55-'59s and the '67-'72s, the good, used and NOS parts are being absorbed by the '60-'66 Chevy/GMC truck lovers. Moreover, I have noticed the price of '60-'66 Chevy/GMC trucks, Panels & Suburbans, gradually climbing, as their popularity gains momentum.