Wow 520hp!! that's wild in my opinion. Does he have a build up somewhere on here of what he used?

I'm was looking at RHS heads with 2.02 valves, 1.6:1 roller rockers, Eddy Air Gap intake,Voodoo Cam 268/276, Lift .494/.513, 750cfm holley, hooker comp headers.

I figure close to 425hp or more cause i'm close to a 318 build that made that much.