You have to machine some collars to fit the bar and the main saddles. split one side and then slide over bar, set block on collars and move into possision , with split at cap seperation line, and a small piece of tape on the bottom of the collar and then install main cap to lock collar in place.
These are universal line up bars , does not make sense to make them for all engines. but would be nice if they included drawings for the collars