Have u tried the "hard" Mtn Dew? One of the flavors in the pack is Baja Blast. I personally found them all to taste terrible, however, and that's coming from a die-hard Baja Blast fan.
Oophf. I would try the BB one just for kicks, but don't think I would buy a whole pack. I'm in general pretty opposed to mixing my alcohol and my caffeine - that's just intentionally asking to feel bad IMO.