The RPO 83 package, comprised three variations from the standard XA Falcon GT, these being of a Holley 780 carburettor, 2.25-inch exhaust headers and a clutch slave cylinder hydraulic pipe heat shield. Pricing and external appearance did not vary from the standard models. The 2.25-inch exhaust headers were subsequently homologated for the XA Falcon GT for Group C Touring Car racing, including the 1973 Hardie-Ferodo 1000, thus making this car a homologation special.
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