[camarojoe]

[ QUOTE ]
ZL1 #3 was built with a standard dual exhaust system with resonators; the chambered was added when Billy P owned it. In the photos there is not a wrinkle to be seen; all mandrel-bent.

[/ QUOTE ]

Here's a photo of the front portion of the exhaust system on the #3 ZL1 supposedly taken in 1969 that shows no mandrel bends, wrinkles at every turn.