So the Gen Mar made your handles up higher? I put in a set of Vortex racing clip-ons. It LOWERED the ride position by quite a bit.
Depends what ya want. As long as you have enough clearance (wheel/front fork bottoming out), you can lower the fork down or put them all the way up to the top of the clip-on.
Do the Gen Mars attach to the fork like the stock clip-ons? I've compressed/lowered my front a mite for my application. Shrug.
What sort of handling/ride do you want?
'00 ZX6R silver