Chambered exhaust

[Bill Rose]

I didn't want to hijack this thread until it just about run it's course.

It was brought to my attention recently that chambered exhaust was available on 69 ElCamino's. Has anyone ever seen an original chambered exhaust system on an El Camino?

It would have to be different than the Chevelle system, because the frame has a longer wheel base by 4". The tailpipes also dump behind the rear tires, not under the bumper like the Chevelles. I wonder if there were part numbers for Elky chambered exhaust pieces, in the parts books.