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: [For Sale]
Stillen Underdrive Performance Pulley & Belt
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07-06-2015, 07:02 PM
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1st
A True Z Fanatic
Join Date: Jul 2012
Location: I 80 Biz U.S. 50
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There is a write up on this pulley somewhere buried in this form…The results when dynode showed a gain of 5hp. FYI any knowledgeable mechanic with hands on experience in the field can get this installed no problem.
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