Like a few have said,... 700 is a possibility. I would think the $70 mod to the cp3 had to be on the FCA valve. The bump stick mod is where he shows his cards,... very little hp for $ spent in the cam. Tons more hp to be found for the same energy, labor and $. He said NOTHING about springs. You need springs to make the Smarty happen!
The big numbers he eludes to are impossible with what he is talking about for mods, IMO.
The biggest hp on stock sticks, and cp3 that I know of was by Luken maybe 3 years back of 659hp and 1400+ tq. He was running the Scary Larry in his 05 auto. I believe he was running a Fat Shaft 66 turbo at the time. I'm sure there was a lift pump,..don't recall which one he used.