What gear was it in for the pull? What rear end gears? These can both affect whp. My SS is getting built now and the baseline pull was only 674 whp on a Mustang. That was in 5th gear (auto) and 3:09’s. It’s the delta that matters, but without a baseline you won’t know that. It’s also not just about the max hp. It’s the area under the curve that matters. A concave curve will beat a convex curve eight days a week, everything else being equal.