Grand Vitara was released in 1998 if I remember correctly, and didn't have 8-valve engines, unless the ones fitted with the Mazda RF turbodiesel. Also, the Grand Vitara had a 4-cylinder 2.0L petrol engine while the 2.0L one in the Vitara was the V6. Due to parts availability I'd not take a V6 Vitara. At least the V6 Grand Vitara, either the 2.5L or the 2.7L (which was available in the XL-7), plenty powerful altough more guzzler than the 2.0L 4-cylinder, have more parts interchangeability with Opel, Daewoo and Chevrolet cars.

By the way, the only bodystyle of the Grand Vitara with the 1.6L available was the 3-door.