Japan Eyes F-15 Upgrade

[tigershark]

A request for 112 billion yen to upgrade 32 F-15 fighter jets. Japan has about 200 F-15s and only eight of them have been upgraded so far.   Aren't Japan's F-15J pretty modern what upgrades have been done I can't seem to find that anywhere?   Are they getting AESA radar's or maybe new engines?   

The story I found
http://www.defensenews.com/story.php?F=3005728&C=asiapac