So leave the FC3 F-15 alone and introduce a new F-15C Module for DCS 2.5 with the JHMCS and Aim 9X since Boeing provided the system on the F-15, F-16, and F-18 at the same time frame according to this Boeing historical snapshot.
https://www.boeing.com/history/products/joint-helmet-mounted-cueing-system.page
"On Aug. 29, 2003, the U.S. Department of Defense (DOD) awarded Boeing a $24 million contract to produce 100 JHMCS destined for the U.S. Air Force F-15 and F-16 aircraft and the Navy’s F/A-18E/F aircraft.
DOD contracts for full production followed in February and June 2004 for U.S. Air Force and Air National Guard F-15 Eagles and Air Force F-16 Fighting Falcons, along with U.S. Navy F/A-18E/F Super Hornets."
If the F-16c that is in DCS were to be placed in FC3, would it have the JHMCS and 9X system available?