¿Tiene el mismo motor de la Nómade 3.2 pero con más potencia?
Yo diría que si 
Hola, creo que hay mucho de verdad en tu pregunta:
Fuente: Wikipedia
The JTS direct injection system was first used in a V6 engine in 2005 with the introduction of the Alfa 159 and Brera.
This is not related to the Alfa Romeo V6 engine, but is instead a derivation of the GM High Feature engine; built in Australia by GM Holden.For Alfa Romeo version of the 3.2 L, see JTS engine.
Holden has built its own 3.2 L (3,195 cc) version of the High Feature engine in Australia produced between 2005 and 2010 with a bore and stroke of 89 mm × 85.6 mm (3.50 in × 3.37 in). Branded with the Alloytec name like the 3.6 litre version, this version produces 227 hp (169 kW; 230 PS) at 6600 rpm and 297 N⋅m (219 lb⋅ft) at 3200 rpm. It has a 10.3:1 compression ratio. Its fuel economy is 4–6 km/L (11–17 mpg‑imp; 9.4–14.1 mpg‑US) in city, and 7–9 km/L (20–25 mpg‑imp; 16–21 mpg‑US) on highway.[citation needed].
Holden also produced the 3.2 L engines that were used by Alfa Romeo as the basis of its JTS V6 engine.Applications:
2006-2010 Daewoo Winstorm / Chevrolet Captiva / Holden Captiva
2006-2010 Opel Antara / Daewoo Winstorm MaXX / Holden Captiva MaXX
Suzuki Grand VitaraY tambien como dice Pincel, fue modificado por Alfa para obtener mejores prestaciones, emisiones y un sonido mas digno de Alfa.
