If you have decent patterns then making your own is pretty simple. Or if you don't need originality then just make hem fit and look good.
I have made a number of lines both in steel and stainless, three complete trucks worth and then some. It may take a few trys to get it right, don't be afraid to throw one away and start over, I have many times.

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-