I found Meyle arms were slightly heavier and the casting detail wasn't as accurate as OE arms
http://911uk.com/viewtopic.php?p=1104204&sid=a18c4aa6de03610c02b2ecce1506b057
http://911uk.com/viewtopic.php?p=1104204&sid=a18c4aa6de03610c02b2ecce1506b057