No, it allows you to redirect versions but not identity.
There is a notion called type forwarding that may be of use, but it does
require source code changes. It allows you to redefine the assembly a type
is defined in, on a per-type basis.
This blog describes it:
http://blogs.msdn.com/junfeng/archive/2006/03/25/560670.aspx
> can you redirect in app.config to an assembly when the public tokens
> are different?