Replacement Selection

Hi to all.

I'm new. I'd like to integrate my code into PostgreSQL. It's the 
implementation of some refinements of Replacement Selection algorithm used 
for External Sorting.
I have got some issue and preferibly I'd like to be supported by some 
developers that have something to do with it.

Who can I talk to?

Thanks for your attentions.
Good Luck!

Manolo.