In 1967, Plymouth introduced the GTX as the trim-level for their mid-size Belvedere. Positioned as the "gentlemen's hot rod," the GTX came standard with the Commando 440 cubic inch big block with the 426 cubic inch Hemi as the only optional engine.

ACCEL, Mallory, or MSD has a conversion kit perfect for your exact application, whatever you're upgrading from – from a high-maintenance points ignition to a breakerless system or a worn-out module to a brand-new Replacement E-Spark module,