I think pictures would be plenty with a good write up. In all reality, it's as simple as taking off heat shield (3 bolts), taking out the o2 sensor (specialized socket is very helpful) taking off 10 nuts on to of the header, 12mm if I remember right, and three bolts at the bottom of the cat (four if you count the one that holds the bracket that holds the cat to the block, helps to take it out to remove the cat).
To install it, just reverse the process minus the heat shield, it doesn't go back on. And you will need to buy three M10-1,25x40mm books and some matching locking nuts for the bottom of the header and a gasket too seal it tight to the rest of the exhaust. It's simple, really. And mostly self explanatory.