Calling Interface via DispInterface w/o Typecasting????

I wrote an application which references a number of automation servers
via interfaces and COM. The application is being converted to use
datasnap and TCP/IP. Some of the interfaces are interface properties of
a server interface.

In order to call the same interfaces in the application using Borland's
socket server, I have to use the dispinterface of each interface the
application is using. This could mean changing many method parameter
types changes and other code modifications.

Is there a way to trick all references to an interface to call its
dispatch interface instead without modifying lots of code?