I remember reading some time ago that the headers off of a 94 360 were better than on the later years and actually flowed better than some of the aftermarkets too. Is there any truth to that? I don't remember where I read that and can't seem to find anything on the subject.

 

They didn't come with headers, Exhaust manifolds.

 

94-95 also had the provision for EGR, which doesn't exist on the 96 and up trucks.

Aside from that, the manifolds are the same.