Don't know where you can find one, but it can be done. You'll have to change out the drivers, put on a longer rear tunnel section, m drop brackets. I converted mine to a 162 last summer.
The pitch on a crossfire is 2.52, and on a m-series it's 3.0. So the drivers will not mesh with the track if you don't change it. I went with the BDX light weight drive shaft and drivers on mine.
The other thing you have to think about is the rear cooler and cooler tubes that run the inside of the tunnel. You can make it work with the shorter tubes on the crossfire or put new ones on.