It is classified in ITA and people do race them. There are no "special" rules for their motors and you are likewise advised to join SCCA and get a 2004 GCR to see what you can do (i.e, .040 over, match porting, balance and blueprinting, etc.)and what you cannot do (internal coatings, radical porting, super-high compression, aftermarket cam gears, nitrous, etc.)
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