I'm interested as well.
I had a guy contact me that has a 98 TA with a LSX 454 Ported L92 heads 236 250 cam with a 4l80e. He said he drives it everyday and needs a better tune in it. I'm glad I saw this thread before I started to tune it.
So I guess all I need is the file that is talked about above and a license for a 98 F-Body(which I have), correct?