[gilmoujr]

Looks like the T45 can handle 325 ft-lbs.
I got the info from

http://www.ttcautomotive.com/products/tremec.asp

Part Number
Center Dist. mm.
Weight lbs./kg.
Torque Cap. lbs.ft./Nm
GVW/GCW lbs./kg.
Gear Ratio 1st
2nd
3rd
4th
5th
6th
Rev

1381-000-001
81.5
109/49.4
325/441
3,260/1,479
3.37
1.99
1.33
1.00
0.67
N/A
3.22

1381-000-002
81.5
109/49.4
325/441
3,260/1,479
3.37
1.99
1.33
1.00
0.67
N/A
3.22

1381-000-0011
81.5
109/49.4
325/441
3,260/1,479
3.37
1.99
1.33
1.00
0.67
N/A
3.22

TNET1386
81.5
109/49.4
325/441
3,260/1,479
3.37
1.99
1.33
1.00
0.67
N/A
3.22