G force. $5k, but worth every penny

Just as an FYI, the T56, while strong, is not bulletproof. My friend runs them in his LT1, and he's had to freshen his up twice in a year of street driving with the occasional hard jaunt. Its on the ground right now with a broken 2nd gear synchro. Plus we've seen on a few that they have a tendancy to "hang" on the 2-3 gear shift. It won't go into any gear for a minute until you pry it out of its spot, then it will be fine. This is with factory originals and rebuilds.