I was battling a stuck pitman arm that was really seized. Happen to stumble across these guys in the UK. Super friendly and it worked out that I was over there on business so I could just have it shipped to the office there and not pay freight to here.
HNJ Engineering - Land Rover Parts - Land Rover Defender Steering Puller - HNJ7000000
This thing is a beast. It grabs on and doesnt stop until its off. I was seriously expecting the amount of energy displaced when it finally popped to be limb altering but all that happened was a pile of rust fell out of the bottom before slowly sliding down.
Bottom line, if you are nervous about cutting the old one off, this is the way to go.