Another mid-pipe ?

I've been considering a mid-pipe and headers for a while, posted a couple of threads and determined that the new BBK shorties might be my best option (so I can be sure to fit cats on for emissions). I am also pretty sure I want to go with Dr. Gas to go with my Flow's. I've listened to the sound clips and this seems to be the sound I like most. Considering the Dr. Gas needs to be welded together and all, what source should I consider for hi-flow cats that will go with the setup I've mentioned? I never have time to visit any local shops to get this kind of advice plus most local shops won't give you the time of day unless you look like some rich punk with daddy's open wallet nearby.

Ideas? Thanks.

P.S. Hope I didn't offend any rich punks who might have otherwise responded to this thread!