Scott,
I can not say for sure so I would call Heartland Customer Service ( 877-262-8032) on Monday and ask them. Have your VIN number so then can look up your unit to see if all of the internal supports were added at the time of MFG. I'm sure that you can purchase it from Heartland if it can be installed - I would strongly suggest that you also sign up for the Heartland Owners Club ( info is here => //heartlandowners.org/forumdisplay.php/350-Heartland-Owners-Club-Join-Manage-Directory-Benefits-FAQs )- you will receive a discount on anything ordered from Heartland ( parts and accessories that is ). It you are looking at adding the beds that savings will more than cover the cost of membership. Also there is a Rally next month in VA Beach - check out the list of rallies on the front page ( portal ) on the right side of the main page.