Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs roughly the same to get the Ford Shelby GT500 to the dealership as the Boxster.
With respect to MSRP, the Ford Shelby GT500 doesn't cost much less than the Boxster.
Utility
The Ford Shelby GT500 will most definitely prove more practical than the Boxster for those of you with frequent kid-cargo.
Comfort
While the front cabin in the Ford Shelby GT500 offers a bit more head room than the Porsche Boxster, there honestly isn't much of a difference.
Dimensions
The Shelby GT500 is tremendously heavier than the Porsche.
The Ford Shelby GT500's tank is about the same size as the Porsche Boxster's, though the Porsche Boxster's is a tad bigger.
The Porsche Boxster and the Ford Shelby GT500 compete for the same parking spaces.
The Porsche Boxster's shorter wheelbase may produce a less-settled highway ride but a more maneuverable feel in daily traffic than the Ford Shelby GT500.
Performance
With that kind of horsepower, both the Boxster and the Ford Shelby GT500 are true speedsters.
Regarding horsepower, the Ford Shelby GT500 packs quite a wallop and will knock the Porsche Boxster down a few rungs. However, note that high horsepower engines often command higher insurance premiums.
Handling
With their similar turning radii, the Porsche Boxster and the Ford likely handle almost the same into and out of tight spots.
Drivetrain
The Ford Shelby GT500's engine is tremendously more sizeable than the Porsche Boxster's. Bear in mind that more massive engines may use more gasoline than smaller ones.
The Ford packs quite a wallop compared to the Boxster with respect to torque, which is the force that lets you accelerate quickly.
Warranty
The basic after-sale protection that comes with the Ford Shelby GT500 isn't quite as generous as the Porsche Boxster's.