J.T.'s 3.2CL

I posted this on the other site as well anyway here goes. I have a 2000 TL-P with I,H,E and was wondering if I would benefit from installing a high flow cat? Has anyone done this to their TL, if so what were the results? Would I actually gain or loose power? Would the exhaust tone change? I know they don't make one for the TL but they do make them for the Accord V6. Any input on this subject will be greatly appreciated.

Thanks, J.T.