that is it,,, when we changed one into a older charger we had to use the rear,,the hubs,,axles,,
we reused the brakes,, one good thing the arms to the hubs were the same. you could get the gears in the hub recut, and run the ones you have ,
where are you getting the T C U ?

also if you move your abs sensors from the rear to the front wheels the car will always think all 4 wheels are turning the same speed at all times the reason for this is because some axles do not come with abs spool on them. haven't done this but though about it.