Get the 90cc turbo pipe. It will mount up easily, be loud as fucking hell, and blast like a mofo.
Bennesar pipes mount SO EASILY to most flat exhaust port bikes, it's just silly. They also perform VERY well, and are SO FUCKING LOUD it's embaressing. I would get the 90cc turbo, but the estoril like one will perform really well, and you may actually be able to pull the silencer off to repack it.