T50 is easy to come by. Even the inverted torx bits are becoming more common in the parts stores.
I can say for sure that Oreilly has both in stock at almost all their stores.
06' LGT Wagon. BNR16G, Catless UP, DOWN, Hexmods VB, Hexmods diff bushings, BIG TMIC.
Best 0-60: 4.651, Best 60': 1.899 measured by AP, 1.897 at the track.