And they were all designed around the last generation Mercedes Benz E-Class platform! So an old German chassis on a new American muscle car.
I see what you mean J6, I miss read your original post to mean the genre vs other genres of automobile, but now I understand you mean old muscle cars vs new.
Much of it is the new safety standards which add quiet a bit of equipment to the front and rear ends… and the standards get stricter. Look at the new European pedestrian impact standards which essentially define the front nose profile…