The present paper reports on a novel way of increasing the modularity and pluggability of text-to-speech (TTS) architectures. In a proof-of-concept study, two current TTS systems, both using XMLbased languages for internal data representation, are plugged together using XSLT transforms as a means of translating from one system's internal representation to the other's. This method allows one system to use modules from the other system. The potential and the limitations of the approach are discussed.