there is a business in Three Lakes Wisconsin that sells vintage boat stuff, Fine Wood Boats

and might have what you need for your hot rod, or vintage Chris Craft...

http://www.finewoodboats.com/

plus a couple photos from the 1962 races. How cool are these trucks!!!

https://www.woodyboater.com/blog/2020/04/02/fine-wood-boats-where-to-find-classic-boat-parts-in-these-parts/
https://www.facebook.com/WoodyBoater/photos/a.258067450929154/2760652937337247