wibas....I'm with Alvin on this one.
If you can,try and get patterns from 'originals'.
Some of the aftermarket stuff is less than satisfactory.
i.e The wrong shape!(Don't ask me how I know)
I'm not sure what the legal requirements are in the U.S but we,in the U.K. require a minimum thickness of 6.4mm(sorry about the Eurospeak!) wink
Heck,I need to emigrate and set up business...I could make a living from you guys! grin

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.