I wouldn't bother with a splitter, given that you are replacing the ball joints remove the nut and smack it with a hammer.
www.mg-rover.org
www.mg-rover.org/threads/tf-mission-creep.873216/
US Pro 46mm Deep socket (3503)
If you are looking for a deep socket to remove the rear TF ball joint, I can recommend the US Pro 46mm Deep socket (3503) that can be found for £12 delivered, however I’ve just seen the same socket on eBay labelled as “MG Rover TF F Front Rear Suspension Top Upper Ball Joint Removal Socket” –...
www.mg-rover.org
www.mg-rover.org/threads/tf-mission-creep.873216/
