My '09 has 18" x 6mm inserts on passenger side and 26" x 8mm inserts on driver side. I have simply gone online or local auto parts and bought equivalent size inserts. You can re-use metal strips that provide rigidity to rubber. Removing and replacing the inserts is not difficult and takes abou 2 min per side with needle nose pliers. Hope this helps
My blades are starting to deteriorate, leaving streaks and one even has a small split, so thought I'd give the Trico Force ones a try; they're very cheap ( < $ 15 each ) so I'm a little apprehensive about the quality, but if they don't do a good job I'll just replace them with Bosch or Icon or similar higher grade brand. Trico appears to be the easiest ones in terms of switching with the OE blades - no mods needed, simple pop out the old pop in the new ( I hope I'm not wrong..) so we'll see. Amazon purchase . The site's car match ( 2013 GTs ) showed a 26 " left and a 17" right , so I trust that's correct .