The metal water pipe has been cut and replaced with a flexible pipe. It has a ko4 tip on at the moment so I think it's very possible.
I'm not buying the 10hp from and air filter etc. just don't see it it was also never picked out as a
problem to me when I had it looked at and mapped by bill, the intake temps wasn't high then either yet a few years down the line the same air filter and intercooler isn't good enough and the map needed tweaking by the person that originally mapped it.
10hp less that the original bhp figure means it was 226bhp when I had it with bills original mapping.
Something doesn't add up. Be careful of people just trying to sell you stuff that you don't need, no offence but It doesn't seem like your a hard guy to sell something or and idea to.
3" tip if it fits would be a nice compliment to the set up though