Rear crossmember between generations?

I am looking to replace a gen 1 Mazdaspeed 3 rear crossmember, but wondering if a gen 2 Mazdaspeed 3 (or even 3 or 5) rear crossmember from gen 2 would work as well?

The part code numbers are different, but they sure do look awfully close.

Thanks much

 

If the part numbers are different they probably aren't interchangeable. The only way to know for certain is to try which I am not aware of anyone else doing yet