how to connect willwood mastercylinder to mopar brake pedal

http://www.doctordiff.com/62-70-adjustable-master-cylinder-push-rod.htmlDoctor Diff sells an adjustable rod that has a heim joint that connects to your pedal. Nice high quality parts. The supplied grommet won't fit tight enough into the Wilwood piston, so you'll also need a 1/4 ID x 1/2 OD o-ring. Or you might be able to make something out of hose.