1. The F16-BL25 onwards were built with 8 wingStations + 1 centerLine + 2 chinPodStations. Older F16s were originally built with only 6 wingStations + 1 centerline. The MLU will give it 2 additional stations on Chin for pods, but not the additional fully capable wing stations.
2. The newly built F16-BL52 can carry more than 1-ton (2000lb) munition on innermost wing stations (station 4 & 6 ), but MLU will not have this capability. Thus the 600 gallon tanks cannot be carried by MLU aircrafts (as per my info).
3. The Conformal-Fuel-Tank capability will not be available for MLU aircrafts.
4. The PW-F100-229 cannot be installed. The MLUs will carry PW-F100-220E engine, which is still a very good engine but with reduced thrust than the 229 variant.
5. Most of the Avionics and Electronics suit will be the same (around 90%+ in my assumption) but still a few EW modifications might be lacking.
Regards,
Sapper