Just me but on my Haro, that particular design pictured in your post, the hardware for the cable adjustment kept contacting & hitting the chain stay on the adjusting nut and bolt on the side of the bike that doesn't have the gear and chain. I even tried reversing the two chrome parts to see if that made a difference and the part still contacted and hit the chain stay of the frame. The LBS had to order the AD-990. This one looks similar and is priced more economically, it's the FS-990:

http://www.amazon.com/Dia-Compe-Free...8934499&sr=1-1

I don't know the design of the u-brake that your bike had originally, but chances are that if it's like mine, the AD-990 or FS-990 design is used for a reason ?