More like a Dictatorship James than lots of Chiefs. Engineering and Styling etc. would simply be following simple rules set down in stone either at a certain date or by following GM corporate guidelines. Sales & Marketing in particular one very influential man (John Bagshaw) were more often than not the ones who mixed things up with the simple aim of selling more cars. Behind the scenes everything GMH did was pure logic, as the most logical way to do anything was more often than not the most efficient - just look at the engine prefix codes used from the start of HQ production. When you sit down and talk to senior guys from the day like Leo Pruneau you get stories about arguments between production managers like Lloyd Beck and the golden haired boy John Bagshaw - one in particular was the HX LE. Guess who won?