Of course, this is only possible if there is no braze-on cable stopper on the RH chain stay.
SJSCycles sell those. http://www.sjscycles.co.uk/product-Unbranded-Gear-Cable-Stop--Chainstay-Fitting--Chrome-18470.htm
@Smallfurry started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
SJSCycles sell those.
http://www.sjscycles.co.uk/product-Unbranded-Gear-Cable-Stop--Chainstay-Fitting--Chrome-18470.htm