59AB - Headers vs stock exhaust manifolds?

[oldford2]

The original exhaust system can easily handle the outflow but there has been a consensus that a dual system had advantages like a better sound with your choice of mufflers and possibility of a little improved air flow. Don't expect to feel a performance change but the new sound may make you imagine it
When fitting your drivers side pipe be sure you check it with the clutch depressed.
John