I swapped the 305 in my SS for a Gen I 327ci out of a '69 Impala. Now just like the subject says, I want to put headers on it as the RH manifold is cracked. Question is, do I look for headers that fit the 305, ones that fit the 327, Or- being that they are both Gen I small blocks- should I get headers that fit the car? Also, some suggestions on brand would be helpful as well.