The only thing I needed was a different exhaust clip. I forget how big it was...maybe 1 3/4"? and mine is on nice and snug. If I can even get it started this winter and not dislocated my other shoulder, I will be able to tell if there is a leak or not
But if there is a leak, I have a sealer to solve that problem so I am not too worried if it is leaking a little bit.
I did ride with it when i 1st put it on and I didn't notice it. Next time it;s running, I plan on putting my ear down there. You might also need a bolt to support the muffler itself. I'll see what I am talking about when you put it on. But I dont have one yet and it seems like it wont be moving anywhere, but I still want to get it cause who knows how much weight is on the exhaust clamp at the block. I do VERY much enjoy the sound of it.
I put in the lancer rejetting kit so I am unable to help on if you need them or not.
btw, I got my clamp at pepboys. it's a car exhaust clamp. Some people said they have problems getting it on with their heat shield but I had zero problems so I dunno. But being I have my heat shield on, I dont have to worry about it looking tacky. Other wise, with no heat shield, I can see it looking a little cheesy. And to make it look nice, you'll need a HD clamp.
Hope this helps.