Dunno about '69s, but according to my GM books, any '68 Camaro 327 over the base 4bbl engine (327/250hp) should have had multi-leafs, and that also meant it had a 12-bolt, but they were rare as hen's teeth. No 2-barrel 327s seem to have had multi-leafs. I've seen a 327/275hp 4-speed '68 with a 12-bolt and multi-leafs, but only 1. Every 2bbl car I've ever seen had mono-leafs, '68 or '69. I guess it's possible, though.