Have a look around for a garage that will modify your exhaust.
I found a little 1 man garage who took my scorpion backbox I bought for £40 (it came off a BMW) and fabricated me pipes from my headers to the backbox in ss pipe for £130.So the whole system only cost £170.
Though it's a bit louder than I really like.I am looking for a ss resonater to put back on.That will make it more mellow.
Or my mates just bought a pipe bender so I might look at making up a duel exhaust.
Roy