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Old 03-25-2007 | 09:46 PM
  #41  
Mr Hankey
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From: South Park, CO
Default RE: ST 90 help
I believe Performance Specialties also makes a Ultrathrust muffler for a G90. I have some for other engines and they increase the power significantly. I also have some Jetts and a Jettstream for a ST. I would go with Jett merely for the customer service.
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