I welded a nut on one end of a piece of 4130 (chrome-moly) steel tubing, a bolt on the other end, and then threaded on the original rod ends. This keeps the original ends intact in case they are ever needed again in a stock application and allows both ends to be adjusted as needed.
Edit; Just thought of something else----I had to turn down the master cylinder end of the stock fitting a little on the belt sander to get it to fit properly in the Wilwood piston.
There are other ways this mule could be skinned. Instead of the bolt I used, a longer, shanked bolt could be welded on a slightly longer tube than I used and the threads cut off. This loses adjustability on one end but would work fine with some careful measuring.