Actually, all mounting points are the same between the stock and the SOS tank. My only problem was getting the lower hose off. The clamp had been rotated in such a way as to make it a bit tedious to get to with pliers. I couldn't see an easy way to clamp off the lower hose and I didn't have a turkey baster; so, the antifreeze ended up in a catch-pan on the floor (don't reuse spilled antifreeze).
Just a minor caveat: make sure you wash off the spilled antifreeze when you are done. It can make an awfull stink if you don't.