The Jeg's Engine Masters Challenge has been concluded, but the article referenced was the only builder story in the current edition. Had found some background info on Speed-O-Motive. which is the info posted
The web site for the Challenge currently lists only the overall scores, dyno pulls have not been updated, but will at a later date which is not given.
Winner was Jon Kaase of Jon Kasse Racing Engines in Winder GA with a 410-inch Cleveland.
No mention of the HP, etc
Jon won last year for the Big Blocks with a Ford.
The Final Round was filmed for broadcast on the Speed Channel to be aired on Saturday Jan 22nd, show is " Lucas
Oil's On The Edge'
..........hope this helps