Wheeler-Dealing!, or Drug Dealing! on the PlayStation version, is the second job in Grand Theft Auto 2 given to protagonist Claude Speed by Trey Welsh of The Zaibatsu Corporation. The mission is available from the bottom of the two green Zaibatsu phones in Omnitron of the Downtown District.
The Yakuza are dealing more business on the streets than the Zaibatsu. Trey orders Claude to deliver the new shipment of merchandise to the Zaibatsu dealers as quickly as possible.
Completing the mission will give you $20,000.