I'm curious about that - don't fit the 99+ body style - if I'm not mistaken, OME uses the same strut (N103S) on all the Vitara/Grand Vitara from '88 ~'05. Suzuki has a whole host of different numbers - 2/4 door, L/R, w/wo ABS - so presumably the damping is different rather than the physical fit, along with a bunch of brackets for brake hoses & ABS wiring.
The other thing that intrigues me - performance shock (and I was reading the Bilstein catalogs & FAQs) - shouldn't there be a difference between an "on-road" performance shock, and an "off-road" performance shock?
When I think "on-road" performance, I'm thinking lowered vehicle stiffer springs and a shock with possibly reduced travel and increased damping - when I think "off-road" performance, it's the opposite - lifted vehicle, increased travel, I don't know if I want a softer spring (although I believe a longer spring with the same spring rate is a softer spring), and I'm not at all sure about the damping. There may even be a need for different types of "off-road" performance - for those of us who are into slow travel with lots of articulation (rock crawling) and others who are into faster travel with less articulation (but still more than on-road) - let's call it "un-paved touring".