who has them and how do they perform?

 

i am running Borla cat-back, i like it alot although its expensive..

Spintech is an awesome sounding exhaust and good performing, only they do not sell a cat-back, u must make ur own exhaust, this is the only down side..

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1988 Camaro Iroc-Z
Medium Orange Metallic
14.04 @ 97mph