I visited one of the Subaru dealers in the area and they informed me that for the 2012 Legacy Subaru doesn't offer a 19mm RSB. I could possibly supply one for them to install but I need to make sure it wouldn't invalidate any of my warranty coverage. I not only have the standard new car coverage but also got the 7 year/100K Gold Plus coverage.
Before anyone speaks up and tells me how the extended coverage plans are a waste, let me just say it's for my own piece of mind based on past experiences, where they have more then paid for themselves covering repairs. I'm paying for it through the financing so it's not costing me that much extra:-)