Here's the loot list for Mafia Wars: Cuba.
Items available for purchase (click picture for fullsize)
Cocodrilo APC, El Rey Roadster, Che's Beret, Guerrilla Commando, and Avispa Machine Gun are all Job Mastery Rewards.
This leaves us with 5 items of note:
TNT - 42 attack 20 defense - best offensive weapon in game - drops from the "Raid the Arms Depot" job in the El Padrino tier.
Guerrilla Squad - 30 attack 34 defense - best offensive and defensive armor in game - nice. Drops from the "Supply the FRG With Some Extra Muscle" job in the El Padrino tier.
Hu-9 Helicopter - 36 attack 27 defense - best offensive vehicle in game. Drops from the "Attack the Army Command Post" job in the El Padrino tier.
Armored State Car - 30 attack 38 defense - best defensive vehicle in game (same amount of armor as Private Jet) . Drops from the "Storm the Presidential Palace" job in the El Padrino tier.
Gaft Hook - 20 attack 30 defense - best defensive weapon in game. Drops from the "Pillage a Shipyard" job in the El Jefe tier (c-c-c-combo breaker)!