97 1500 W/T Which high flow cat
 

my catalytic converter started rattling and just to confirm it was that it was shot i took it to a shop to check it out. Well now i have the problem that i need a new one and have no idea what i need to get. If some one could recommend something for it would be a great help. I have the 4.3 v6 in my 1500. any help or pointer would be great!