Japan ugrading their F-15J/DJ
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http://www.flightglobal.com/articles/2007/11/26/219819/mitsubishi-to-lead-japanese-f-15-upgrades.html
DATE:26/11/07
SOURCE:Flight International
Mitsubishi to lead Japanese F-15 upgrades
By Siva Govindasamy
Upgrades to Japan's Boeing F-15J fleet will likely be led by
Mitsubishi Heavy Industries, with the company expecting a contract
for the project in the first quarter of 2008.
Funding is likely to be approved in the coming fiscal year, with
the defence ministry seeking a ¥112 billion ($1 billion) budget for
the programme. MHI is likely to upgrade 32 of the air force's 200
F-15s in the first project phase.

The programme has an added urgency as Tokyo is delaying plans to
procure a new batch of fighters to replace its ageing McDonnell
Douglas F-4s. It has asked for information on the Lockheed Martin
F-22 Raptor and F-35 Joint Strike Fighter, Boeing F-15 and
F/A-18E/F Super Hornet, Dassault Rafale, and the Eurofighter
Typhoon. However, the USA is refusing to release information on the
stealthy F-22, the aircraft that Japan covets the most, forcing the
programme into limbo.
The stand-off has resulted in Japan starting a study to develop
next-generation stealth technology, which if successful could lead
to the production of its first indigenous fighter in almost 30
years and give it a long-desired ability to counter China's growing
air power. Observers believe the study could also be an attempt to
force the USA to release information on the F-22, especially since
an indigenous programme would cost several times more than an
outright purchase.
Upgrades to Japan's F-15s and possibly even some of its F-4s could
be given priority in the coming years, although the latter have not
been included in the fiscal year 2008 budget.
Boeing has been talking to overseas operators of the F-15 about
radar upgrades, after receiving a $70 million contract to retrofit
US Air Force and Air National Guard F-15Cs with Raytheon's
APG-63(V)3 active electronically scanned array radar.
The USA is also looking to upgrade its F-15Es with AESA radars,
with the APG-63(V)4 competing against a derivative of Northrop
Grumman's APG-81 developed for the JSF. Such systems would give the
F-15 enhanced capabilities such as those sought by Japan to counter
possible threats from China and North Korea.