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Old 11-24-2008, 12:35 PM   #1
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Location: Idaho Falls, ID
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H Stock legal upgrades


I'm a new owner of a '04 ZX3 2.3 PZEV and am considering upgrades, but want to keep the SCCA autoX H Stock class an option. We do have a local club and they do run some local (eastern Idaho) events. From preliminary studies I am aware that I must stay with 15" or 16" rims, can upgrade to some "R" compound tires, can upgrade the front anti-sway bar and bushings and can use any stock type shock, like the SVTs.

I'm in doubt about two other variables. There are no specific prohibitions about the mufflers other then the cat. Can I upgrade to a free flow type muffler so long as the noise level is acceptable?

Since the SVTs were an option in '04 could I use any other of the stock SVT suspension parts legally?

Finally, any experience based recommendation on wheel and tire combos would be appreciated. Also suggested alignment.

Thanks, In advance.

Adios, David

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