invigiator

Anybody know about these?

I bought a set of DS-9, which I suspect are for 2001+ bikes. I've got a '99 M400.

Is there much difference? Do you think I can make it fit, possibly with exrta parts or modification. I've E-mailed cycle cat but no response yet, and they'll probably just tell me to buy the DS-7 which is for the older bikes.

Somebody must know the difference between the older and newer models.

Julian.