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I just bought a 2003 Cobra, the previous owner handed me a dyno sheet and all the mods that were done to the car. It says it has the 2.8 pulley, but when I went out to measure the supercharger pulley the overall DIA from end to end is 3.1. The dyno sheet says it's making 13.2psi of boost.
What is the correct way to make sure it's the 2.8 pulley?
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