I tried to find one locally, but no dice. If you can wait, you can find the correct shaped hose at a Benz dealer for a 2003 SLK32. It's about $10, as opposed to the $32 wanted by Chrysler. I could not wait, so I bought some transmission cooler relocation hose from Autozone ($8), as it is the same diameter, cut a piece, and because the radius is so large, you can loop the hose to the existing ports. just make sure it's away from the Exhaust mani, and check that is long enough to not flatten when the engine moves.
Hope this helps