Im slowly trying to get my k10 to daily drive it to work 40 miles at highway speeds of 70 to 75 mph. Im fearful of over revving it at those speeds and would like a trans with an overdrive. currently it has a Th400 in it. I was looking at monster and a 700r4 with a 1350 stall tq converter.

http://www.monstertransmission.com/7...l#.WXlB-IjyuUk

i know there are other options 4l80? 6l80? I figured I would ask as to what holds up to the torque