you can search Ebay for wire stop, or take a bolt or other piece of round stock (aluminum would probably work fine as well) and make one. Easier to drill the hole for the cable in a lathe but, you could make one in a few minutes and get it done!

http://www.ebay.com/itm/4-Throttle-Brake-Cable-Wire-Stop-Fits-Vintage-Mini-Bikes-Predator-212cc-/181077190696?hash=item2a290aa828:g:ZFEAAOSwaNBUb3z2

Mike
1955 Chevy 6400 ex-flatbed (no bed now!) sold September 2023
In the Stovebolt Gallery
1958 Chevy 6400 flatbed W/dump
In the Stovebolt Gallery
1959 Chevy Suburban Owned for almost 20 years, Daily Driver -- sold May 2016
In the Stovebolt Gallery

Sufficient unto the day is the evil thereof