| vs. the Stoptech ST40.  Maybe not a big deal for a street driven car, but I know my personal track day budget is thankful. As already mentioned, the Wilwood rear kit will require some modification to the OEM caliper mounting points that are not reversible.  Also, the Wilwood rear rotor does not include a parking brake drum.  The rear Stoptech kit does not require modification and also retains the parking brake.  The parking brake was not a concern for me on my track car. A local member here traked his Z on the front and rear Wilwood set-up and was putting down 600whp.  After installing a brake bias lever, he was very pleased with the performance of the kit and was only replacing pads and outer rotor rings as needed. 
 "Too dumb for opera, too smart for NASCAR."
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