I have used the same hardware 'mod kit' to make my OPpo BDP-83 region free and I can second what Ashish said regarding how easy it is to apply this 'mod kit'. It really is ano brainer and took me no more than ten minutes to do. This included the time it took to open all the screws on the player to open it and then to put the screws back on to close it.
If anyoen needs help with this, I would be glad to help. I am located in Gurgaon.