I installed the update kit myself, it is a single part number that comes with the tubes and bowls. I can't believe you would have the new bowls and not the tubes.
If you don't have the update, contact a dealer and have them get you the kit. I couldn't get the kit from my dealer, they said they didn't know anything about it. I got it from a guy on Snowest that worked at a dealer in Iowa, or somewhere near there. All I paidwas the shipping to me.
If you need the part number, I can get it, I noticed the old bowl that I took the picture of was in the bag with the part #.