headers or manifolds for 4 door 318 valiant

73 valiant 4door auto, air and power steering with a 318 in it. just ordered a lunati bracket 2 cam wondering if i should keep the stock manifolds of get a set of headers for it. has true duals with old school cherry bombs now. ive also heard headers are a pain to make work thanks for any help. finaly figured out how to post and reply. love this site. my first mopar learning so much