I did a search and came up empty handed. I also checked with a dealer as well as gmpartsdirect.com and came up empty handed.

I've got the factory dual cat exhaust but there is one part that I need to complete the conversion. DynoDon says its called the diverter to converter secondary air tube or something like that.

It goes from the engine compartment and uses a slip fit to attach to a similar part by the same or similar name, that is already attached to the dual cats. (IIRC Don said it feeds cold air to the cats on start up to get them to light off faster). It should be about 12 to 15 inches long, with a couple of bends and one 90 degree bend.

Any help with a p/n so I can order this and get my car smogged would be greatly appreciated. Thanks.

For anybody that's interested, I think the p/n is 10077542. If anybody knows differently, please post. Thanks.

The one I have only has numbers on the black valve not the pipe itself, the numbers are 22036195 & 00992.

The part in question is now Discontinued from GM. You will have to make one yourself. Happy hunting!

Thanks, Jon and yes, it has been disco'd.

The only guy I know that could duplicate this is Jerrywho.

Luckily, Dynodon was able to make do with the existing pipe. I now have dual cats and, even better, I just passed smog!

how did u get dual cats let me know p/n's and other info thanks

Dual cats part # 10185070 .