I am skeptical about that as the 418 (the other little blue motor you built and posted here last year) with the 434 Lunati solid roller with ported eddys made 550HP or so. I haven't run the one I have yet (copied that build kinda) but I imagine it will be on the edge of streetability. At least I hope so.
I have a 340 that came in my fish that will get the eddy heads I took off the stroker when I put in the 434 cam. May have to freshen it up and run it to see how it compares to the 416.