Lots of names and numbers make up many of the cars found in the FordMustang production line as well as the aftermarket. Some areengineers' dreams, others try to stay close to meaning or capability. Consider the Saleen S281, the Roush P-51, and of course, the ShelbyGT500KR. The cool thing about this Shelby GT500 variant is that itsoutput is known to be near the 500hp mark. Or is it?
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