Quote Originally Posted by 34_40 View Post
... since the measurement you provided was still in excess of 3" I figured I'd keep looking. I'm thinking I'll have to call Summit and hopefully get a tech who won't mind digging into some boxes with a tape measure...
Mike,
The Mallory Billet Comp on mine looks to be just a hair under 3" OD below the cap. The ledge on the cap makes it 3.25" but that should be well above your manifold. I really think you'll have a lot better luck calling Mallory or MSD direct and talking to their tech guys instead of Summit. There's gotta be a distributor out there that fits. They used the manifold back in the 60's, right? Maybe a magneto.....