new exhaust

[LSX-Nation]

Im ordering headers and a new y pipe. Already have the money on stand but just trying to decide on a few things.

First is, how many people run ory pipes? Do high flow cats get clogged? Not sure if i want to go with or without cats on my set up. Its mostly a weekend car not a daily.

I already decided on TSP longtubes. A lot of people like them and they seem like a good budget header.

What is a list of material i will need to install this?

Headers
Gaskets
Plugs
Y-pipe
o2 extensions?

Just trying to decide on a catted or off road y pipe. Thanks