if its just for looks you want just get a custom place to chop your current tip off and weld on a new stainless one, most places will do that for £20-30 max (or around here they do)
dont do a backbox chop to just run a straight pipe from the cat back, its overkill loud i tried it when i was 17 on a clio lol!
i quite liked the sound of my decatted 1.2 16v clio with a custom stainless exhaust but it was bloddy loud, id consider standard exhaust with a nice tailpipe mod and a decat pipe, id bet that would sound pretty good without being too loud