Quote Originally Posted by evert View Post
Could prove difficult to get an "off the shelf" spring and guide kit for the Mercury, but Knibbs makes a rear guide that is supposed to fit better than the original, just make sure to find a spring that matches.
Those spring guides are designed to work with the standard spring or even better the Titan Spring, the No1 spring is the correct spring and that will also fit the Titan Spring guide, power boosters and top hat.