Here's where they are on the map:
http://maps.google.com/maps?f=q&hl=e...&t=h&z=16&om=1
The one just above Tyburn road is Pick-a-Part...just park along the fence just off the road, and stop in at the trailer before going into the yard. They usually have a bunch of 3rd gens and a couple 4th gens just inside the gate to the yard.
The one just south of Tyburn road is Crecent U-Pull-It. They are a little more organized (they even have a basic price sheet), but they usually don't have as many f-bodies.
- Justin