I'd imagine you'd need the stand alone ABS computer, MC, ABS proportioning module/distribution block, (not sure about this pump you speak of) and yah you could re-use the sensors...
It could probably be done.
That being said, I've driven new BMWs and other cars with terrific ABS systems. I'd still rip that crap out if I could. I'd rather limit break, and avoid the long stops in the snow that ABS is known for.