That would be interesting aside from me just liking the feel of knife edge trems better.You will definitely have to adjust the routing and probably fill the mounting stud holes. A few years back, Max and I worked out how to make a replacement block that would let you have the traditional spring and claw setup in the back but retain the ZR and bearing top.
I have the cad files for the block you would just need to get a machine shop to make you one from brass and bolt it up.
:hesright:I'd sooner replace the guitar than try to hack a knife edge trem into it. Tons of other guitars out there where you can get what you want.