folks, i'm looking at these 2 fans and have some questions (especially for those folks who have both installed):

1. which has the more powerful motor (or air throughput)?
2. can these two fans be fitted together (how? pictures?) or are they mutually exclusive - in that case which should be the one single fan?
3. from the fan blades direction, which one is mounted in front of the condenser & which one is behind the condenser?


E34 520i CLIMATE CAPACITOR/ADDITIONAL BLOWER



E34 520i ELECTRIC ADDITIONAL FAN
http://www.realoem.com/bmw/showparts...01&hg=64&fg=60