shouldnt be hard..... i made a custom reverse lever for my trx300. rear brake cable stretched so instead of leaving it on there dragging or the lever flopping i used a bmx brake lever...... its a dia comp dirty harry flipped upside down. plus its got the "neat factor" goin for it. just gotta inform ppl its not a brake before they ride it. used stock cable and had to cut the barrel piece off of the adjuster and thread it into the lever, then go in fron the back side and adjust the slack

-94' trx300FW:blue, warrior front shocks, 300ex rear shock, 300ex rear hubs, rincon rims, 25" executioners, cycle country boot guards, quad mag shock covers, warn 4-2-4, 3000lbs winch, k&n, cobra full system, blue T.H.E. lock on grips, 250BR cam chain, EBC clutch with spacers on springs, custom reverse lever, snork'd, 250sx cam
-85 200x: 200S motor, 1 tooth up front sprocket
-85 200x: megacycles cam, wiseco top end, custom heel guards, full cobra, k&n, irazr radial rears, trail wolf front.