I'm toying with the idea of swapping my Ninja 2 (back box only) for a more angled back box look. Maybe something like a H&S Jap Angled box would be good. Fitment is 2.5'' for a newage. Haven't got any pics of mine to hand at current as its in at a garage but it's in great condition with no dents or scraps.

If anyone's interested let me know. Also I'd like to keep the tail pipe diameter roughly the same if possible.