Thanks allot, mates!
OSS, that cutting simple. I've started with small screw-driver, finished with some pliers and knife:]]. New grilles and rings are simply glued-on with some "super glue". Hardest work was to take speakers out (for safety during this mod), becouse all parts of the box are mounted on the front panel, not on the back pannel ,as we all are hoping:]. Also this model's sound is pretty week, as u can see from the first pic, speakers size is faked..But anyway, Sony looks nice and i'm very happy about it.