Nick's Garage 383 manifold vs headers on the dyno.

Yes, they are sweet engines. I've gotten tired of chasing the "best" of everything and "no replacement for displacement". Most Mopar engines were plenty good enough...
I know.. but It's only to fight off these traction controlled 485hp rovers,teslas,porche...etc.
At least we know old muscle is still king of the streets..hence the 408/416