Another Carsound High flow cat question

[Camaro_SLP]

I'm looking at different places to purchase a 3" Carsound high flow cat. I came across a website that has many different universal high flow cats, and it listed its configuration.

What are the differences between these Configurations?

"No air"

"Single/Dual & Dual/Dual No Air"

"Single Air"

"W/O2 Boss"

"W/O2 Dual Boss"

"Singel/Dual & Dual/Dual W/O2 Boss (Note: O2 Boss located on Dual Side)"

Which one do I want for my car? And what exactly do those mean? No air vs. Single air,,,etc.

And while I'm looking, can anyone recommend the cheapest place to buy a new carsound high flow cat? And possibly the part # for it. I need one ASAP.

Thanks.

[ September 01, 2003: Message edited by: Camaro_SLP ]</p>

[F1GT]

single = 1 inlet/1 outlet
single/dual = 1 inlet/ 2 outlets
dual/dual = 2 in/ 2 out
air = air tube
02 Boss = O2 connection

Just get the No Air Single model 94009.

I got mine here:
http://www.exhaustproslinc.com/carunconwita.html