If anybody out there wants to fit a lower mesh grille to their 2003 > WRX or STI 4dr or 5dr then the Subaru part number is SECSSE3060. If you look at the Subaru web site it says this part only fits 4dr models and I was told the same thing by my local dealer. However I wasn't happy that the grille wouldn't fit my wagon which after all has the same bumper as a 4dr. A quick 'e' mail to Jim Childs at Cheam Motors and he confirmed that the grille will fit all the above. Fitting is dead easy just remove the number plate - offer the grille into the opening and push it all the way back at one side until the tapered tab at the top locates in the recess at the back of the opening then do the same for the other side! Make sure you locate at the back of the opening as there are also recesses at the front. The fitting instructions show where to fit the supplied screws but after a test fit I decided not to bother as it's rock solid. The front end looks better with both grilles ( in my opinion of course ) and more importantly it protects the lower part of the radiator - don't know why Subaru don't fit them as standard ??
If anybody wants a pic of the fitted grille let me have your 'e' mail address and I'll send it on.