Looking for Horsepower Guesstimates on Friend's Build

I found something similar, eddy's with a "Our stick is a COMP Xtreme Energy High Lift hydraulic flat tappet, with specifications of 295/297 degrees gross duration, 241/247 degrees duration at .050-inch lift, and .545/.545-inch lift."

https://www.motortrend.com/how-to/how-you-can-build-a-stout-537hp-street-440/

On The Dyno
440 Chrysler Big-Block
RPM:TQ:HP:
3,600527361
3,700525370
3,800526381
3,900528392
4,000533406
4,100534416
4,200535428
4,300537440
4,400538451
4,500538461
4,600538471
4,700535479
4,800532486
4,900530494
5,000527501
5,100524509
5,200521516
5,300518523
5,400513527
5,500508532
5,600502535
5,700495537
5,800487537
5,900477535
6,000467533

430-450 horse
You don't have much faith in eddy heads I guess :)