Manzo exhaust for my '02 Boxster

[sjbox]

I am getting new Magnaflow catalytic converters put in my '02 Boxster. I thought while they are working on the exhaust, cutting up parts and welding new ones in, might be a good time to upgrade the exhaust. So I am looking at getting the Manzo unit:
Manzo Exhaust System Porsche Boxster 986/S (1997-2004) CBS-PB01

My question is, does this unit require any modifications to the CAT system? I have read other threads where people have put bypass pipes for the 2nd/rear CATs. Is that somehow necessary to fit this aftermarket Manzo unit? I'd rather leave all the CATs in as is even if the CAT bypass is 100% CA legal.

Thanks!