This panel measures about 50" at the bottom corners. The top of the panel doesnt look like roadster to me. Is it Cabriolet? Coupe? Sports coupe? What is the measurement in the same place as the chalk arrows for a roadster?
I Googled some 28 cabriolet images and they show a cabriolet having a bead at the bottom, and probably over the wheelwell too. So, you don't have a cabriolet. Just a regular coupe or sport coupe. The B pillar was a steel U channel with wood inside it. The skin wrapped around about a half inch in the jamb. Yours looks just like that.
Thank you Alchemy. I've been googling images but a measurement would help a lot...and if you could turn a little lead into gold for me too
It could also be, 54-A Business Coupe. It's not a Cabriolet quarter panel, Cabriolet has a slight rise where the front edge top meets the door. It's kind of like a recess for the top to fold down to when it's in the down position.
My coupster, starting at the B pillar 15 1/2" to front of wheelwell 33 1/4" length of wheelwell and about 2" after that to rear.