My downtube friction shifters aren't braze-on. They're clamp mounted. So would I need something like this from Harris Cyclery? http://harriscyclery.net/product/ori...alloy-3253.htm

About the cost. Holy smokes. I've spent a fortune upgrading every single part on this bike except the frame. I could have bought a carbon fiber bike, almost. But you know what, it's worth it. I love the old girl and I enjoy tinkering and improving old technology with new. Lots of fun, and still way cheaper than golf, drugs, boozing, and fast women.