For what purpose?
29s don't fit on any A-body without a lotta work; so 29s imply track-time.
with what trans?
at what weight
and altitude
and stall?
What speed are you expecting to trap at?
Yea the back end has been done to fit 29x18.50. Mostly street with some race time. It has a 727 not sure on the stall was waiting to see what gear to get first. 3200# Dodge Dart with 360 magnum and single turbo.