How many Cat Converters do I need for a Sedan? Newb question i know

is this a good deal?

http://chicago.craigslist.org/wcl/pts/2029464831.html

 

eh, you can get brand new ones for a little more

 

You only need two, one for each header. and 300 isnt bad for that they go for about 450-500 new.

 

Anyone know the sounds or hp difference from stock?

 

do they fit 03-04 G Coupes?

 

thats what i have on mine... seems a bit slower from a dig.. but rolling on the interstate it picks up more... dont know hp difference.

my sounds wayy more raspy once your into it but just cruising around its quite... sometimes on the interstate i drive with the windows down and radio off just to listen to it