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

i am planning on putting a 360 in my 66 dart, what factory manifolds will work for this, or alternatively, are there any headers that will fit? not opposed to cutting fender walls, but would like to do this as a last resort.

i have the original 273 manifolds, but these are prob a little restrictive for the 360

also have a set of 318 manifolds from a 74 dart, but not sure if these would flow much better.

anyways, what are you guys running for this combo?