Possible source for sheet metal bits...??
 

I have no affiliation with these folks but found their site online. They sure seem to have a large variety of stampings for a number of chassis models. I was thinking of calling to find out about the specs of the steel used; gauge thickness and so on. Anyone ever heard of this outfit? Geeze, a 123 front fender for 57 bucks?? I wonder about fit and finish of some of the other items such as rocker panels and valences.

http://www.showcars-bodyparts.com/mercedes.html