Swapped to Muscle - 75 Duster Daily build

There are a couple of different manifolds, specifically performance and non. The 68-74 340/360 driver side and the 68-71 passenger side are more of a free flowing design with a bigger outlet and flat flanges that require a gasket. Then there are the 273/318 manifolds that have a smaller outlet and a tapered seat at the pipe. For the most part, the left side manifolds look the same, but the right side manifolds look strikingly different between the HiPo and LoPo manifolds. There are certainly differences between the manifolds among those in the same groups, but as a general rule that works.

Not sure you could get the exhaust to bolt up if you had the wrong ones, though.

Z-Bars certainly have potential differences that could cause issues.