I'm thinking A Body with a 440?

Longgone said
As far as chassis headers, if you`re just going with a mild 440 I`d suggest the Schumacher header. Good bang for the buck. They do have their limitations though and if you`re building some horsepower then I`d recommend the TTI`s. They`re expensive but built extremely well and are available in 2" diameter.

The Schumacher headers are great. I have my Scamp at 12.01@112mph with the mufflers on. It will hit 11s this spring with differents tires.