It's against the forum rules to advertise private hacks currently. Hopefully that will change. But in any case, you can check who's released stuff in the past and try pm'n or emailing them.
If your post count is low, then that simply means you have not made yourself a part of our community. I would recommend participating in discussions on the main MPGH forum (not spamming release threads) if your post count is not high enough to pm/email.