I worked for them for 10 years and never encountered sending one but I think that includes shipping, they handle internally the shipping. They also list exchange for $215.99 with a core charge of $95.00, that is United Carburetor. The other place is National R&R. This comes up if you go to Auto Zone.. But not the exchange page. This will ship to home but I would guess to ship core back will cost you.

Ron, The Computer Greek
I love therefore I am.
1954 3100 Chevy truck
In the Gallery
2017 Buick Encore
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1960 MGA Roadster Sold 7/18/2017