Ra(reinforce alert) is now called DWX(to make it equivalent namesake with SH3's GWX I suppose) you must have this mod in my opinion.
Don't forget to download the patch as well
Link to mod
http://www.redrodgers.com/forums/showthread.php?t=4912
Link to patch
download starts pressing Загружаем just under "latest news".
http://www.ra-dwx.narod.ru/
Alfa Tau is Italian mod for DW. DWX is howeevr the biggest and the newest mod right now. I suggest you try it. You'' love it. Make sure you read the weapon documentation. They've changed so many things on most of the weapons.