Fitting wide tyres

I HAVE BOUGHT A SIP WIDE TYRE KIT AND CARRIED OUT THE MODS TO THE REAR HUB, THE PROBLEM IS THAT I HAVE LOST THE INSTRUCTIONS ON HOW TO MODIFY THE SWINGING ARM CAN ANY BODY HELP ? DOES THE REAR SHOCK ALSO HAVE TO RELOCATED ?[:bounce:] [:bounce:] [:bounce:] [:bounce:] [:bounce:] [:bounce:]