I guess it’ll depend in part on how far you’re willing to drive.

Alan P has a Mopar friendly dyno in NJ, and there’s always Barton in Pa.

You could also call Todd Marsh and see about the shop he uses.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads