flow and sound better

ok im going to be build my 318 or im going to swap to a 340 i want to know what are the best headers and what size piping is good i want that classic rumble like a 68 roadrunner with a 383 and a three quater cam i know it wont sound exactly liek it but i whant the rumble and to be loud not to loud but loud

hooker headers or super comp hookers or reccomend

2.50 or 3

glasspacks or cheery bombs or flowmaster or reccomend