I agree, with $10,000, at least for now, you can buy an excellent complete western cab with next to no rust, have it shipped home, and have a very professional restoration including paint. You can pay someone to do the work for you and have an original cab when done.
I imagine it will be many years before the new cab is close to being a viable replacement for the real thing.

•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-