Once you see it, you see that it would be a relatively easy DIY install. In fact I've see similar spring-loaded ball latches for use on closet and cabinet doors.
This is obviously a little smaller than the Sprinter which has a slightly larger ball and instead of a strike plate, the ball protrudes between the two rollers on the top track.
Glass half full or half empty to an engineer is simply a glass that was over designed.
PM me for sale info on my 2011. SOLD!