i have a 300zx 2+2, and finding cheap exhaus systems was very hard for me! greddy had one for $1000. What i did was have a custom cat back exhaust built for less than $300!!!!! it all depends on if you want to have cats or not, buy some hi-flow cats from ebay, and buys some mufflers you like from ebay and have a muffler shop weld the cats, mufflers and then take out the resenator and put in a H-pipe or a X-pipe and you are all set