docbook

Hi.. I'm currently investigating http://drupal.org/project/docbook because i'd like to port that to drupal 5.x
But in the meantime i also found out about this http://drupal.org/project/importexportapi module, so i was thinking of rewriting the original docbook module and let it depend on this import API. No need to reinvent the wheel, and i guess that by doing so i only need to bother with the docbook format and no longer with the whole XML parsing.
I'm a right? Is there anyone interested in collaborating with me?

Greetz.