bpel engine source code

Hi all,

I may be interested to modify to bpel engine code to adapt it to do some extra stuff, which I'll need in a project I'm involved into.
As an example, I would like to be able to deploy BPEL processes to the server straight from the java code of my system. As I saw, that management and monitoring APIs do not provide such functionality.
Right now I'm simply calling the ant script deployment from a Java funcion, but I'd like to know if there is the possibility to have access straight to the BPEL engine code and modify it.

thanks and all the best,
roberto