Replacing trem on LTD MH-307?

[xxdeliverance]

My LTD is in need of a new trem. I have a few stripped screws on this bridge and the knife edges are a little dull.

Few questions:
1. Is an OFR a drop-in replacement?
2. If not, how about any of the higher quality (schaller) licensed floyds?
3. Will I have to route anything?
4. Also, does anybody know the radius on these LTD licensed floyds?

Any help would be appreciated. Thanks!

 

[MaxOfMetal]

There should be a diagram up on the Floyd Rose site, just measure it against the current route and trem.