What are your plans for the car? Drag only w/o ABS..... 9" w/ 33 spline axles and a detroit locker diff. is a pretty stout selection! Good choice. You can run this combo on the street so why even worry about the ABS? BTW, I did mention 33 spline; if you're going with the 9" you might as well go with the bigger axles too. Just my 2 cnts.
ive shot the spider gears through the back of a 9" housing (on bias ply tires even) so dont be thinking they're indestructable.
most of the sport utes have the 8.8 irs in them and the trucks have the dana 60(?). perhaps the dana bits can be adapted, if you just need a strong rear end and it doesnt have to be a 9" (poor man's quickchange)
have you considered talking to someplace like currie enterprises? i bet they've had this question before
SVC Performance installed a 9 inch rear in a Cobra a few months ago. I thought it was a Moser too. Maybe you should call them and ask what they did about the ABS. I have no idea if they retained it or not. They are located on Scottsdale if you want to call.
Wow. If you drive like that on the streets, I would save some money to pay for your future legal issues. Isn't there a track somewhere near you that you can play at to your heart's content?