I believe Janspeed made a better version of the Holbay manifold which gave a little more torque and BHP. Weren't cheap even 30 years ago, but not sure if they are still going, or are trading under a different name.
I know a fellow fastback owner who had a system made by a company on ebay and it was excellent quality, but no manifold. That might be something worth looking into a group buy....
Stainless Steel Exhaust Systems
Posted - 23 Nov 2012 : 21:54:34
