The 1600 single port build that I have been working on is using a Mikuni carburetor. These are normally found on Harley Davidsons and are fitted with filter covers. Whilst there's a lot of different bling style jewelry air filter cover available (Harley owners generally seem to be some of the worst for bling) this was no good for the 1600S/P build. What I really wanted was a nice velocity stack to finish things off.