Posted for Mark Steitle <msteitle@mail.utexas.edu>:

Perry,
You force me to do some detailed research.  So, I went to my favorite website, Pegasus Racing and sure enough, they have a 3/8NPT to 10AN adapter at http://www.pegasusautoracing.com/pdfs/072.pdf for $10.49 + S&H.  I need to order one myself.

Mark S.