The F-15X configuration is impressive as it includes a flat-panel glass cockpit, 
JHMCS II helmet mounted display (HMD), 
revised internal wing structure, fly-by-wire controls, APG-82 
AESA radar, activation of outer wing stations one and nine, advanced mission computer, low-profile heads-up display, updated radio and satellite communications, 
the highly advanced Eagle Passive Active Warning Survivability System (EPAWSS) electronic warfare and electronic surveillance suite, Legion Pod-mounted 
infrared search and track system (IRST) and the list goes on.
https://www.thedrive.com/the-war-zo...15x-boeings-f-15c-d-eagle-replacement-fighter