Install Dyom files in gta SA user's folder in my documents 
Put grenade.txd and grenade.dff in gta3.img with Img tool or something else like Sparkle, Alci's IMG Editor 1.5.....
Put weapon.dat in data folder of Gta SA (Before, backup your weapon.dat, Please!!!)
Add effectsPC.txd to folder model of SA (or you can just extract fireball6 effect and add to your's, Thousand Thank to the author of rasengan mod)
And Enjoy Clan Yakurim
Author :Rudmand Bergeau<John( J)> and partner
e-mail: rudmanbergeau@yahoo.fr