"150hp @ 10,000 rpm (at the flywheel). Would be maybe 5% less than that at the wheel." is incorrect. It makes 180 hp at flywheel at a stand still with no ram air induction aid which is where the advertised 180+ hp comes from. The rear wheel stock should see approximately 148hp +or- %2. Adding slip ons will increase flywheel hp +5-7hp while full exhaust 9-13hp. expect %75 percent of that to be sent to the rear wheel.
17 or 18 horsepower at the ear wheel
Clarification, "How much is the rear wheel horsepower of a 2007 STOCK Mustang GT with NO modifications?"
Stock about 130hp @ rear wheel
210 Hp
365
The 2008 Ford Mustang GT has 300HP
a stock 2000 cavalier z24 2.4L puts out 155 horsepower at the wheel
275 to the flywheel
10 trillion
about 430 horsepower to the wheels
--$100-900
163 hp