Unable to find stock exhaust manifold needed to smog '79 Bay

[Grateful Deadhead]

My daughter and I bought a '79 federal Bay bus as a project to work on together. We got it running and now are trying to register it (in California). We now see the PO replaced the stock exhaust with an aftermarket header (from the heater boxes rearward, including removal of the catalytic converter), so it won't pass a smog test. We've tried just about every salvage yard listed on the Samba and others listed online with no luck. Any thoughts on where can we find a stock federal manifold/crossover pipe would be greatly appreciated.

[Wildthings]

Someone just posted a solution to this problem over the last day or two. They used an available 4 into 1 header system and then connected that into a cat and muffler.

Here you go:

[Bleyseng]

Ask Ken at thebusco.com as I thought I saw one sitting there on my last visit
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[Grateful Deadhead]

Thank you Wildthings, aircooledchris and Bleyseng for the information - very helpful!

I will check with thebusco.com for the original manifold. I will also ask aircooledchris on his post about how to address a needed EGR port, and a good source for the cat.