Well, if the cat is in good condition, i recomend getting a test pipe made. But if you still wanna gut it out, you just gotta remove it and punch out all the squarelike material inside. Ive heard of some people using a broomstick?? i think that only works if your cat is worn out and the **** was brittle. My cat was still in good condition so i had to drill it out with a big circle drill bit. If you do my method be carefull not to entangle the drill bit with the metal mesh surrounding the squarish material or your legs will pay the price like mine did. lol i got the cuts to prove it.
good luck!
markp
red200sxser
AIM:mapball20