Hi there! Not trying to be rude or anything, but Anl has made it very clear he won't be releasing his Late Challenger's - several have asked, but I don't think it's going to happen.
If you're willing to wait for awhile however, Austin is working on some late Challenger's (hint, they won't be free) . As far as the TTT-6 goes, I'm pretty sure there is only 1, if I'm wrong though please correct me.