Mustang is a good marketing name for a car that takes to the wide open roads of America not unlike the horses that the Spaniards left and the Native Americans later tamed.
It is a name of Freedom, powerful and sleek made to run in the wide open spaces of America.
I think the P-51 is more akin to Rousch and his love of WWII planes and the Mustang, but the namesake of the P-51 is certainly similar in nature, which is why it was named the Mustang in WWII. Again, a truly American creature.
2009 GT Alloy Ext / Blk Ltr Int - DG Qtr Louvers, Koni STR.T Struts/Shocks, Steeda Boss Springs, GT500 Strut Mounts (notches to the engine), Hurst Billet Pro Plus with Brushed Al T-Handle, Enkei PF01 18x9.5" +35 mm offset, Conti ContiSport 3 275x45x18", JLT S3 w/BBR 91 Oct Tune, AM Raxiom Smoked Coyote Tail lights with LMR sequential turn signal harness, LMR smoked bumper park lights.