Removing my stock cats was actually easy.

 

stock cats were easy get the car all jucked up first and spray with pb blaster on every bolt you have to undo including 02 sensors do every 20 mins for an hour or so then go to work wile ur waiting remove air intake ect also remove o2 sensors with cats off the car the only proble we had was of the header bolts wouldent let go even with over 400+lbs pullinf in a breaker bar that when it finilly let go broke the hallow piece of alluminum pipe we were using and sliced my hand open good times