What options
I can tell you this, I am putting down 500 rwhp and will be hitting the car with a 175-200 shot this coming summer. I changed from a Moser 12 bolt to the Midwest Chassis Fab 9" for ease of mind. I'm running 31 spline axles, and a Tru Trac. ABS can still be used .....mine is deleted.
A three channel rear end has ABS. A 4 channel rear end has ABS and traction control. A 'channel' is just a way of describing the means for a speed sensor to gauge the wheel speed. On a 3 channel rear end, the two front wheels have sensors, and there is one sensor on top of the rear end housing that reads for the whole rear. On a 4 channel rear end, there is a speed sensor at every wheel. 4 channel rear ends have reluctor wheels on each axle, 3 channel rears have one big reluctor ring on the differential. Because a 4 channel has a sensor at each rear wheel it can see the difference in speed between one wheel and the other, and ta-da, you have traction control.

