That seems like a lot of cam duration for that intake manifold and CR. But with 540 CID, it has enough torque to give some up at street 3000 rpm to get the higher hp peak rpm numbers.

I agree the intake is killing it, but I guess the customer wanted that factory look rather then the best performance. With 114 CID more than a factory 426 Hemi, it should be a fun driver.
I would like to find out what ET/weight it runs.