Finally found the right parts in the store. Here's my new baby with some modifications. Added a second intake/valve and extended the pipe above waist level. I'm gonna leave it as ugly as possible for now, to deter my fellow city dwellers from eying it.
Just after adding the pipes
Bound the pipes to keep them stable.
And look at these massive logs of lump that came out of my bag.... wtf mate (sorry this one is blurry)