The part# from the other thread (1130900129) which is supposed to be the Y-piece with the rubber connectors, can be found on oediscountparts.com for $145

I tried to find it by year, model and subsystem and that didn't work. I put that part number in to the search and it came up. I cant verify if that is the correct one though.

BTW, that site/dealer is in Ashville, NC