I have a 1995 GS-R 4dr and i want a new exhaust. I had a P.O.S. ractive exhaust installed way back a year ago and it didnt pass state inspection because it was a P.O.S. lol so I want a new one. Ive been looking at Apexi World Series exhausts for my car and Greddy SP exhausts also. WHy? because ive heard they're quiet. The ractive exhaust i had on my car for a maximum of 2 days was so loud i almost went deaf. Should i get an Apexi WS or Greddy SP exhausts? The WS is cheaper than the SP, but I think I have to make my mind up this time and not blow my money like I did with the Ractive P.O.S.

Oh yea, and my cat is welded onto my current exhaust. Is there a way i can get a new cat that just bolts onto the new exhaust and headers? if so, what kind is there and where can i find it the cheapest?