To clean up the install, I hot-glued some auto carpeting available at Walmart to the fiberglass and hot head liners. A sharp razor blade trimmed up the rough edges. You can see the coax coming out in the lower left corner. I hot glued this along the top and then along the driver's side side of the top.
Should be ready for install tomorrow, along with the install of the PL-259 on the end of the coax.