[nberga]

Hello nberga,.............

1/ The larger (bulky) piece of the adapter pushes on to the plastic (endbell) of your motor with the 2 "arms" on the adapter leading the way. 
The 2 "arms" fit  in to the indents on either side of the endbell  (where the metal tabs on the motor can are folded over to secure the plastic endbell).

2/ The small flat piece pushes on to the other end of the motor (the can end), with the flat side against the motor , and the raised angled bit on the top side of the motor.

3/ This complete assembly then snaps into the car.

Cheers
Chris Walker

PErfect!!!! It worked like a charm, thanks Chris.
Now just found out that i need a pinion puller :D 

Let's go for stage 2 :D