I will help you with post modifications if you need them, but you can't ask for a post here. They will close the thread before anyone can help you.
If your control is a Fanuc, you should already have a post that will work with a minimum of modifications. Mastercam already has 2 or 3 Fanuc compatible posts. The code may not look the way you are used to seeing it, but it will more than likely work just fine with a few setting changes.
For a Fanuc you should be able to use MPFAN or MPMASTER without any big changes.
What problems are you having with the MPFAN/MPMASTER post?