has anyone here ever used 67 up exhaust manifold on 64 to 66 A body

I "think" I remember seeing the 70 340 manifolds on an early A-body V8. They angle milled the drivers side and possibly shimmed up the engine? Don't remember the magazine, but there were two early A's shown in same article, one being a black Cuda, thinking the other was a Dart. maybe somebody else has the article they can scan and post here.