| tire combo. This will help solve all the above: [ http://www.geocities.com/z_design_studio/ ] IIRC, stock TT rear is at a true (since most tachs are off) 2400RPM at 60mph. The NA rear adds about 300RPM. SS
____________________________________________________ 2-19... always remember 2-19... 
You keep driving Laguna Seca with a video game - I'll drive the corkscrew in my 12 year old Z.
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