Best trans for a manuel swap?

T56 is the best trans as far as I am concerned and can be gotten around a grand if you shop. Both 5th and 6th are over drive .74 for 5th and .50 for 6th. I have one in my truck and cruise 90mph in 6th at 2000 rpm. I will be putting one in my 64 Signet, They are practically bulletproof and can take much abuse and can take 450 lbs of torque for the late 90's T56 and that's just a start..

Gear Ratios : 2.66, 1.78, 1.30, 1.00, .74, .50