What does this Schebler SX1 SV2 Carburetor fit?

I cam across this carburetor along with some other oldies in a crate full of parts I got from a garage that closed in the early 1960's. It actually seems to be in decent shape. everything functions and I don't see alot of play although many of the screw heads and what not have been buggered up so it's been apart probably more than once.

There is an SX1 stamper in the Throttle body. The bowl underneath it has SV2 stamped in it. I googled it and didn't come up with any exact matches. Any ideas?

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http://www.thecarburetorshop.com/PkitL.htm