Depends on weight as mentioned. At 25lbs, or about, a G62 would be fine for sport flying, big loops, and the like. And it could be done, but that is big for a Pitts.
I have a scratched Ultimate that I built from my own plans, 80inch span, all up weight is a little over 25lbs. ZDZ 80 in that, and it will 3D it. A G62 would pull it fine, sport flying