Distributor changes

RustyRatRod said
Also, the "correct" way is to weld the outsides of the slots, since you're limiting how far the advance goes......although it works "either way".

Kindof but no and yes.
Kindof because lots of folks thinkthe goal is to 'limit' the advance so in theory it seems right, but its not.
Sometimes it makes sense to limit the advance, but the way chrysler set up the distributors, many more times its better to weld the inside. That keeps the curve shaped properly for street driving, road racing, cricle track when using vacuum advance. Also helps a little bit on the top end with electronic ignition.

Abodysrule said
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.

yes and no. If just working on limiting the advance (welding the outside) it will be close to the same. If dealing with a long quick initial advance, then the inside needs to be limited.
Presumbably the Mancini unit is set up the same as an original Chrysler Mopar Performance unit. Need to look inside and make some measurements to be sure. If it is, then advance is going to be pretty close out of the box.

Abodysrule said
What about my question on adjustable vacuum cans, any recommendations there?

It has one. You can adjust when the vacuum advance begins.
With some minor modifications, you can also limit the maxium degrees added. Its explained in the article I wrote.