You insure ABS reluctor wheels (they call them DTC systems) are on the side axles and not the pinion nose. If they're on the front, the housing is 2" too long requiring the DS be shortened an equal amount. Otherwise its a direct bolt in. Given an NA chassis still needs to deal with pinion flange and six bolt axle flanges, but neither of those are deal breakers. I wrote a honcho at the Q45 club who said they're a popular upgrades and getting more difficult to find, but still around.