Opinions on a 8.75" / 2.76 sure grip?

Thanks for the replies. I think my li'l Dart has enough rubber-burning, Mustang-punishing potential even with a 2.76 - it runs a lot of highway miles.

The little MPG gain with the 2.76 is just a benefit - here in denmark, the gasoline price is about 2,50 $....per liter!