Re: 94 v6 vacuum question
Yea that's supposed to be an elbow. I'm guessing the previous owner lost/broke the elbow and replaced it with that one.
As for the hesitation its really hard to say for sure what it is but a vacuum leak definitely wont help. If that doesn't solve it then the next step would be to check for trouble codes. I *think* you can still check the codes on your car without a scanner like this: https://www.muscularmustangs.com/test1.php
Hope that helps, good luck with the new ride!