so I bought a catted h-pipe off a 98 gt thinking it would fit my 99 no problem, well doesnt and I looked on ebay and seems like there is some sort of difference? not sure what the difference is? basically the passenger side I could get to bolt up but the drivers side bracket seemed wayyy off and too big, I ended up just putting the stock cats back on for smog but I still want to get this on the car. just looking for any suggestions. im going to go to my schools shop to use a lift sometime this week so anything helps.