Canis,
Welcome to the PY boards. I think $320 for a set of # 13s is a pretty good deal.
13s had a 75 cc chamber, so you are probaly right on the edge of 10:1. May want to consider opening up the cahmber a bit when you have the heads rebuilt.
Doesn't sound like yuo need anything exotic. If this is for a street car, I would go with an 068 cam, an early (68-71) stock 4-barrel intake, a set of Ram Air exhaust manifolds and have Cliff set up a good Q-jet for you.
Also, buy Jim Hand's book! PY sells it and it is worth every penny.
-----------------------------
Darrell,
Did your Judge come with 13s? Have heard of folks saying auomatic RA III cars may have had 13s, but I never actually saw any factory documentation to support this.
I only buy 4-speeds.
racerboy