Mallory crab distributor, pros and cons on a 276 street engine?

[danliveshere]

Guys my Motor city flatheads engine , approximately 276 cubes, has a Mallory crab distributor on it. The engine was running rough and now won’t start and this afternoon I noticed some of the contacts in the cap are worn out( looks like the rotor button was touching a few on one side of the cap) and the other side look hardly touched. This is still a new build but hasn’t been on the road properly yet apart from a few miles last week, and it drove terribly. I guess my question is stick with this Mallory or rebuild a crab with points? There’s no vacuum advance to the Mallory, and I’d have to drill and tap the thickstun twin carb manifold to get a vacuum port, also how does the Mallory work without vacuum port? Is it just a race distributor or will it work ok on the street? Thanks Dan