hey man. you should be able to. i changed my Low TRS II to a schaller floyd rose ( same dimensions as the original floyd) and it works like a dream. no more tuning every 20 minutes , no more cat intonation, no more hassle and a lot more sustain. go to stewmac.com, goet the schaller floyd rose. it has hardened blades aswell for durability. seriously, its so worth it. then get the TRS grip it really tightly and throw it as far as you can, and hope you hit the guy who invented that god awful trem right on the head or in the crotch .
o, you can use the original trem anchor posts with the schaller so you wont need to bore your guitar, the new posts will fit in the old bushings in your guitar. i used the original bushings, springs, nut and its al perfect. hope i helped