Thanks. The local NAPA (which is "usually" pretty good) couldn't come up with a part number, they wanted specs and said they could figure it out from there.

I knew there was an easier way...

Thanks again.

1956 Chevy 3600 NAPCO 4x4
1955 Second Series Chevy Short Box
1956 Chevy 3100 Short Box

Story in the Gallery
More pix and info on my web site