Where is the best place to buy a high flow y-pipe, and will I feel much of a difference when I install the new y-pipe and high flow catalytic?

 

Wait til you get headers to do that.Otherwise it is a waste of money.

 

I need a new cat, and I thought the easiest way to put a new one on would be to get a new y-pipe also, I have the money for headers and a y-pipe, so should I just go ahead and buy the headers and y-pipr instead of just y-pipe and cat?

 

if you have the money buy all 3, new headers, y-pipe and the high flow cats