You can try Holmes carburators on Ellice ave. Finding a good shop that knows how to tune up carbs /engines with ethanol blend fuel are not easy to find.
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pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. Hardtop ,lagoon aqua metallic (Q) ,421 cid Dart Industries block and heads. 550 hp. 575 ft lb of torque.