The bigger issue is he probably needs the new rubber insert to go with it, and that can be difficult to find. Last one I got was NOS.
If you need the whole thing place a wanted ad on this site, I expect you'll find what you need, even if you don't know exactly what you need yet..

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-