Yup, true duels, 2" pipe to rear bumper.

o2 sensor is located just aft of front three collector in exhaust pipe. Gauge shows rich as do the plugs. No sensor in rear three exhaust stream.

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

Gotcha.

Does your carb point North/South or East/West on the manifold?

~THOR~

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Certified Auto Appraiser - RevItUp Classic Appraisals
Too young to be slow, too old for high speed.