We are planning a similar 383/496 build with a 440 source kit. Trick flow 240's and track heat intake. Waiting on machine shop to confirm the 383 block will be good to go before ordering rotating assy. Got the heads last week, Dwayne picked the cam. Solid roller 262/260 .631 with 1.5's. 950 etc.... Should be fun. That street 496 post is pretty dang impressive! Especially considering flat tappet and pretty small carb. But I've always liked low decks. Build your low deck and dyno it for us so we know! lol...