In a 1989 Ford Mustang GT :
The 5.0 liter High Output V8 engine is rated at :
( 220 horsepower from the factory ) according to my
Chilton's Auto Repair Manual
The 1997 Ford Mustang GT was rated at 215 horsepower
( 500 horsepower ) for the 2008 Mustang Shelby GT 500
The 2008 Ford Mustang GT has 300HP
The 2005 Ford Mustang GT has 300HP
215 Horsepower Stock
The 2003 Ford Mustang GT with a 4.6 V8 came stock with 260 horsepower.
The 2005 Ford Mustang GT has 300HP
300 horsepower
260hp
215 stock
Clarification, "How much is the rear wheel horsepower of a 2007 STOCK Mustang GT with NO modifications?"
The 2004 Ford Mustang GT with a 4.6 V8 came stock with 260 horsepower.