I have an 06 base h3 I just got an 08 alpha which parts can I take from those six and use on the 08 I’m talking like window motors blend door actuator‘s some four-wheel-drive parts how much is actually can I use from the the06

 

Everything except the diff gears and front diff. Your 08 has some differences in the wire harnesses, like window controls, door locks etc, but if you know how to adapt those you are good.