Stephan,
All you should need is a replacement ring gear. $24.99 each
Pioneer Inc. - Flywheel Ring Gear
Part # : FRG157N
Line: PIO
* 1 Year Limited Warranty
* 157 Teeth
* OE Number: C2OZ-6384-B
This is from our local parts store.
http://www.oreillyauto.com/site/c/se...ang&vi=1333381