CE and CE Cabriolets?
The cabrios were made by the Karmann Coackwerks....one of the best in the business. They are extra strong/rigid because of their tops than the sedans. There should be NO NOISE at speed, if there is, I'd question that the body was not straight...ie accident
AFAIK, all the glass is different between the coupe and the sedan (the windshield is more steeply raked and the back window is more flat).
Wind noise is less (in the coupe) than in my CLK







no wind noise on the ce