Mopar purple .528 for a 383?

Your good man, I just had a bunch of crazy deals fall into my lap so it’s taken on a whole evolution. I’d keep the DP4B and everything else if I didn’t just buy the heads and headers.
Are you sticking with the MP cam? IMO, it'll be undercammed for those heads and intake, BUT it will be a pavement peelin SOB. I'd run it. It'll be a hoot.