hi looking to see if anyone knows if the cats on the following systems are interchangeable?
exhaust system M 96.20 for 986 Boxster 1997-04
Porsche Parts, Spares And Accessories: Retail And Trade: National; Worldwide Delivery | Design 911
item: 13 996113921AX catalytic converter
14 996113922AX catalytic converter
with these
exhaust system for 986 Boxster M 96.21/22 2000-02 and 986 Boxster M 96.23/24 2003 ONWARDS
Porsche Parts, Spares And Accessories: Retail And Trade: National; Worldwide Delivery | Design 911
996113.021.12 catalytic converter
996113.022.12 catalytic converter
thanks in advance