Well Im selling my 4L60e and Circle D 3C and going TH400. The tranny has about 3,000 miles on the rebuild and works flawlessly. It was built buy a local guy who specializes in GM trannies, especially 4L60's and he knows his stuff. It has a wide red alto band, zpack 2-3 clutch pack, transgo HD2 shift kit and vette servo. It is currently in my truck but I will take it out as soon as I find a buyer. The converter is a Circle D 3C which is about 3500-3700 stall speed. It also works flawlessly. Fastest 60' with it was 1.64 with a bonestock 5.3 with a 150 shot and 1.77 60' on motor. Its $745 brand new. I would like to get $1000 for the tranny and $400 for the converter or $1300 for the combo. Here is a video of the nitrous pass
And a video of it with the new turbo setup