I got it apart. What I was planning wont work.
I bought an old Mallory dual point for a Pontiac V8. This is the one with the two piece cap and it has vacuum advance. The part that fits into the engine is longer and thicker than the Chevy so I thought I could just turn it down and shorten it. When I go it apartI could see that the OD of the lower bushing and seal are too big to take the cut I needed. It would have been cool because it only has 4 lobes and would be perfect for my 153. I have a new 4 cylinder cap
PPLAN B: I have a similar Mallory for a Chevy 6 but it doesn't have vacuum advance. If I can fit the lobe and advance mechanism in it I'll use it.
