The left hand drive g8's and the like get used regularly by employees, people basically drive them home and two and from work.
What opel designs are you referring to that have been used in commodores?
Technically the same company (as in general motors) but not as such becuase Opels are designed in Europe, and deal largely with fwd platforms. We do Holdens, obviously, Cadillacs, Pontiacs, chevrolet, hummer and buicks
tune and an exhaust and these things make heaps of power! they come with a garret gt35 stock which can make huge power and the 4.0l has no problem winding it up. Ive seen multiple xr6t's on RE customs dyno pumping out over 350rw.