Exhaust system for a 1965 Dodge Dart GT

I think the first question is what exhaust manifolds or headers. Do ‘68 manifolds fit on an early A? I doubt it but don’t know.
So it’s either ‘66 & earlier manifolds or headers.
So I think the first decision is what manifolds.

68 340 manifolds can fit an early A; may have clearance issues with the steering joint. Different ways to solve this, but I switched to a power steering column (shorter shaft) attaching the shaft to the gearbox with a Firm Feel adapter. This moved the joint back out of the way. Passenger side, the later 340 manifold will clear more easily, but the 68-70 manifold did barely clear the inner fender protrusion around the upper A arm mount of my 65.

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