Mokulele airlines 208's in scottsdale...

[Roger Roger]

You won't find any with purple tails but several brown feeders and specialized/ad-hoc carriers have ex-pax birds. We have just a few left (thankfully). They're fat pigs, even with the interiors stripped out, and are limited to certain routes. They average ~500lbs more than the older straight freight birds.
That being said, they're also typically always 675 horse birds so that helps during the winter a little in the boot-equipped birds.

That's a big difference in empty weight. I wouldn't have thought it was that much.