I'm cleaning up my 59 283 to put it back in my 3800 1-ton, i got a new edelbrock intake and carb, but i'm thinking about gettin a set of close to the block headers, i started to look at the oem exhaust manifold that i have and a set of used headers at a swapmeet and the size of the ports and inside diameter of the casting is making wonder if a set of headers would give me any advantage over the stock setup? does anybody have any opinions on this?