I hate how huge the 08 rear seat headrests are, the middle one is perfect, do I've noticed the 09's adopted the idea of making all the headrests tthe same flat shape, do the 09 head rests fit in the 08?

 

no they do not. we tried them in my fiances 08 and no dice.

 

Were the bars too far appart? Or is it because the angle of the bars on the outside seats go in at an angle and that makes it so the bars dont go in very deap?

 

You could always try swapping the cushion parts to make it fit.

 

I tried it with a buddy's car the other night, and the posts on the GE8 are too close together to fit into the GD3 holes. No idea about depth, because they won't go in in the first place. Now, if I had access to a welder... Hmmm....