Distributor changes

Interesting, I did weld/file the slots on my slant six, it was pretty easy. I like the limiter plate idea as it is easier for testing different configurations. I could always use the plate for testing and once dialed in, weld the slots and ditch the plate.

What about my question on adjustable vacuum cans, any recommendations there?
I've never really shopped around much on those. I just pick one I think will get the job done and go. They don't work at all a high percentage of the time, since you're under load. Vacuum drops off then. All that's really important is that they do hold some advance at part throttle. Yeah, you can argue it, but I just don't get "that" specific about it. I do at least get an adjustable can though so I can tailor it a little. It's just not that critical. That's my opinion and I stick to it.