He straddled its heaviness and adjusted his helmet, then stared at the handlebars, waiting for the dual exhaust to ignite.

Round jet style dual exhaust outlets were incorporated into the vertical bumper extensions and the rear bumper was entirely redesigned.

Dual exhaust was no longer standard on the convertible.

Four-barrel induction systems were now the sole power choice and dual exhaust were no longer available.

By 1978 the single-exhaust 460 generated (but dual exhaust remained an option).