Hey, im gettin one this winter. Dooo u actually shift it? Or does it improve shift points? How do they actually work? THANKS!
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1988 Mustang 5.0 LX Convertible
-Mac Cold Air Intake
-K&N Cone Filter
-9mm FMS Spark Plug Wires
-Hedmann Headers 2.5" O/R H-Pipe
-Flowmaster 40 series 2.5" Catback
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