OK, I will freely admit that I know nothing about A2 cars, so I have these questions that relate to a future enduro car that would not be a standard IT car. Basically I'm interested in putting A2 front bearing carrier & hubs & 10.1" brakes on an A1 for better braking and more durability. I would retain the A1 control arms. Can I just swap out the A1 bearing carrier and associated hub assembly for the A2 part? Are the ball joints the same, the steering knuckle, etc.? The axles? thanks in advance...