Its a DynaPack im sure and those read super high in comparison to your typical mustang. DynaPack designs hub mounted dynos. The only dyno I know of that reads higher than a dynojet, lol. Don't get too caught up in the numbers. Baseline the car before tuning and walk out of there with concrete results of power gained.
Dynapack
Thanks,
Alex Goodwin
AlexG@motionlabtuning.com