66 dart with 360 ...what manifolds or headers?

if you can find a set of spitfire headers ( they pop up fro sale from time to time) they are a good compromise. better then the 340 manifolds and not as good as the full length header. and probably one of the cheaper ways to go. guess it all depends on what your doing with the car.

Laysons sells the spitfire headers checked on them not long ago "few months"