It's my understanding that the M163 wouldn't help us because it can't shrug off RPG hits. The M1 can.
So when going into an urban warfare zone filled with RPG-carrying fanatics, some sort of gattling-cannon on an M1-based platform would be preferred.
5 Legislative Days Left Until The AWB Expires
Applique armor would probably be needed. Or, one could just drop the M163 turret onto the Stryker, which has shrugged off RPGs in the past.
Then again, I think that the Army should have not bothered developing Stryker. The LAV-25 (used by the Marines) and the M8 Buford could have been purchased and fielded sooner, with no need to spend money developing a whole new vehicle.