The USAF F-16 fleet only uses the GBU-31 and GBU-38. Stations 3 and 7 have been wired to carry a single JDAM. Other stations are not fully equiped for the JDAM.
With the addition of the BRU-57/A Multiple Carriage, "Smart" Bomb Rack, two GBU-38's can be carried on stations 3 and 7.