The exhaust under the 83 D150, Dual Dutra's each with 32 inch down pipes, that Y together.
The slant in the D150 was built for low RPM torque, so it is not a high winding slant, this exhaust system gives it a definite growl as the RPM's get above 2500
The wrapped Hooker Long Tube Headers in the 68 Barracuda.
When on the strip the headers dumped in to a set of 18 inch extensions. The project for this week is putting a street friendly exhaust system in.