Impreza R Sport Rear bumper question

Hi all,

 So as I've mentioned before on here someone has knocked my rear bumper scuffed it and left a dent in it to

i am thinking of buying a replacement, but might go for a widetrack one?..would this fit like normal non widetrack?

because i am thinking i may aswell go for a different look than just replace like for like and i am also interested in the rear arch trims from ht autos aswell http://htautos.co.uk/shop/subaru-impreza-sti-wrx-2001-2007-rear-arch-trims/

also if i had them rear arches would my wheel still look ok? there prodrive gt1s

thanks

andy