Just found this post so I did a bit of searching and came up with this. It is designed for the Hasegawa kit so I don't know how much would be useable on the Italeri kit.
http://www.hannants.co.uk/search/?FULL=ED72378
It is sold out at Hannants but somebody else may stock it.
There is a link to the Eduard online catalogue to let you view the instructions for the set. You will need a PDF reader though.
Hope this helps.