get on the horn and call around to shops that make a/c hoses. SOMETIMES you can find a place that will make one in a special (to them) application. You have to make sure it's not too large in diameter so it will fit where it needs to fit, etc.
But honestly you are in pretty good shape IF you can find one, at $350. They used to be about $1100 last time I looked.
Also, last resort, you can call a dealer with that part number and have then do a search for it. If any dealer has ordered one recently it will be on record. Then you can call that dealer and see if they have it in stock or what. I used to do that all the time. Time consuming but that's how you take care of folks who need their stuff fixed.
