Well, back to this. My car has failed again 4 years later, because the smog tech said I should have 2 catalytic converters. He also said that California ARB shows that a 2010 legacy 2.5 turbo should have 2 catalytic converters.
and if you don't have a 2012 and above the 2012+ airbag and wheel also is a direct swap
https://legacygt.com/forums/showpost.php?p=5664950&postcount=2067
You'll have better luck searching Plastic Rivets or Push Retainers than pop-its.
https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=subaru+plastic+rivets&rh=i%3Aaps%2Ck%3Asubaru+plastic+rivets
Also, don't use any kind of chemicals to clean off your old sticker before putting the new one on. I used rubbing alcohol and it rubbed away some of the paint under the hood. The paint is very thin.