For those without a welder, you can get a 45Degree copper elbow piece, a strip of aluminum from a can or flashing for a spacer.
Cut to size your aluminum strip and wrap it around the end of your intake pipe, then fit on the copper elbow piece.
Make sure to sand or rough up and coat all mating surfaces and use lots of soldering flux.
Melt in some solder into your joints with a propane torch.
Make sure there are no burrs or solder drips inside the pipe.
And there you go!
I'd put a link of what I did but cannot find it.
What is on my bike is the old setup with a 90Deg. elbow.