Hi Denny S.,
I've got a C6/2.88 PowerLok Jag rear.
With 315/35-17s out back it'll light'em any time up to and including 100 mph if you whack the gas
3.77s'l prolly be grand for pulling stumps and doing burnouts

. Not so fine for highway cruising like last weekend when we drove 1100+ miles to the Fling and back

. If I could find a 2.75 I'd use that

!
So think about how you'll be using the car and decide the axle ratio accordingly!
Tom