Yep, just swapped my harmonic balancer to my new motor. Undo the centre bolt first, this is easier said than done. If your car is manual then put it in gear, and undo bolt. Auto (like mine) presesnts a new problem. No matter what gear the auto is in the motor will still turn with the wheels stationary (Ie: Auto in drive engine at 700rpm foot on brake...) This means when you go to undo the bolt more than likely the engine will turn and the bolt will stay as tight as when you started. Now I'm not sure if this way is widely accepted. All I know is that it worked. Get your biggest (or your mates) breaker bar with the correct sized socket 7/8" does the trick. Put the socket on the bolt with the bar leaning on the lower right hand side of the engine bay. Then crank the starter for a split second. This way the engine cracks the bolt for you. (I know sounds pretty bush mechanic, but it worked safely) Then remove the bolt yourself. From here you will have to buy or borrow a harmonic balancer pullar (pretty cheap) to take it off. One last tip though. Only take the bolt half way out. so when you use the pullar it has something to push against, This way it won't damage your crankshaft, as the the pullar will try and pull itself into it.