I say you can't on one if you refer to the Mustang as a "stang". No one referes to a Camaro as a "maro" or a Viper as a "per".
But seriously, I think that people should know how to do a basic tuneup before owning any vehicle. Like change their oil, spark plugs/wires (or C.O.P.s), battory, windshield wipers, and rotate their tires.
2004 Mustang Mach 1 - SY
Exhaust - Wanna be Flomasters...
JLT Ram Air Intake
SR Performance Short Throw Shifter