Explain this exhaust tip phenomenom

I have noticed that on some Dusters/Dart Sports/Demons the chrome tips seem to be at more of an upward angle with less space between the bumpers and exhaust tips... I like this look and want to replicate it on my '70 Duster. Is it just a matter of personal taste or did they come this way from Ma Mopar. They look better tucked closer to the bumper and angled higher in my opinion....nico