Auto body repair & detailing: sheet metal gauge?, sheet metal gauge, cuda

Question
What is the gauge of metal used on fenders, quarters, etc in the late 60's & early 70's. Especially on Mopars.

Thanks

Answer
Don,
I'm not sure but I'll try to measure a fender on a '73 Dart. I'm guessing something like 20 gauge. The Dart's for sale (340, TF, yellow w/white top) and also a '65 Cuda (mostly for parts or drag car), if you know of anybody in the market. Also, a 354" Hemi with an early six pack intake, 11 to 1 comp and Crane solid lifter cam. Asking $2500 Thanks!