Think its series 5 episode 4... Brains, Brains, and automobiles... was bugging the hell out of me until I found it :)
Son of Stan | Season 6 | Episode 2
Season's Beatings
They fuse in the episode called " Vegito vs Super Buu"
I cannot locate an episode that takes place in Alabama.
Funeral for a Fiend
Son of Stan | Season 6 | Episode 2
Season's Beatings
Episode 3 Blowing Off Steam
They fuse in the episode called " Vegito vs Super Buu"
Doppelgangers (Season 5, Episode 24)
Season 4|Episode 10 Model Misbehavior
I cannot locate an episode that takes place in Alabama.
Im pretty sure its Season 1 Episode 3 "Blowing off Steam"
The episode was : The Tan Aquatic With Steve Zissou. Season 5, episode 11
Funeral for a Fiend
Season 21 Episode 20 | To Surveil With Love
See Provided Link