Real talk: exhaust manifolds on 360 Dart
Here's a brand new set of Doug's headers for a good price.
[FOR SALE] - Doug headers smallblock
I run the 71-73 340 manifolds and on the passenger side they are under 2" at their exit point. I'm going TTI longtubes over the Winter and on a stockish 340 may not see much of a gain but I do like the sound pf longtubes.