V8 to /6 vacuum advance

Alright, i need a bit of help on this. My darts six has been acting a little stumbly right off of idle and my dad suggested that a different vacuum advance could help.

Heres my question, will a vacuum advance from a V8 distributor work on a six cylinder distributor? The only one i have is in the car, so i don't want to take it out and mess with it to find out it doesn't work, and risk breaking something. (which seems to happen a lot)

Thanks for the help!