89-95 Vitara had three types of gasoline motors G16A (carb), G16B (uniport injection), and G16B EFI....the last one being the best churning out just under 100 horses! Later engines were H20A V6, J20A I-4, H25A V6, RF-2.0TDi, and the latest being H27A V6!
Panel spares for the model are rare but can be managed, however, engine spares are more easily available as G16B is the same motor offered in the Baleno GTi!
On road...as quick as a 1 KZ...if tuned properly can even take on a stock 1KD!
Off-road....sand, mud, beach, snow YES.....hard core NO!