I love the T-5 in my 46, fun to drive and she shifts great. I've had other trans in this truck, this one is the best so far. Just read ALL the T-5 info you can, lots on the bolt and Inliners.org. I took my 'mystery' T-5 to a local shop before install and it needed a couple bearings.

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed