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Parts Catalog
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PETRIS OPTISPARK DISTRIBUTORS & KITS
Optispark distributors and complete service kits for all 1992–1997 GM LT1, LT4,...
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OPTISPARK DISTRIBUTOR INSTALLATION COMPONENTS
Everything you need to support your Optispark distributor installation process— including the...
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LS ENGINE CONVERSION PARTS
Everything you need to convert your 1963–1996 Corvette to LS power, without...
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CUSTOM CORVETTE SOLUTIONS
Products developed by Chris Petris and still built in-house by Throwback Automotive....