I looked on their site for a email I could ask somebody about the part and found none. Must be old school!

I did find this:

Need Assistance?
Order online or call our expert Chevs of the 40s automotive staff to assist you in placing your order.

1-877-735-0587

Phone Center Hours
6:00am to 5:00pm M-F PST


Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
Project Journals
Stovebolt Gallery Forum