Is that a 5.3 or a 6.0? I really like the 4l60e over the 700r4, I know that you have to have a computer to run it and you can't use the stock speedo. I've got both in old cars and the 4l60 out proforms it bad. JMO You can check out my thread project 2 wd
http://67-72chevytrucks.com/vboard/s...d.php?t=368287 I put a speed wat IFS under mine.