honda civic type r origional back box and powerflow custom exhaust ?

i have an origional back box from a 03plate type r and also a powerflow exhaust been decatted and no back box adds bhp and sounds amazing especially in a tunnel or under bridge u can jus hear raw power!!!and when your really pushing it it fires flames out the back!! 40 for back box and 200 ono for powerfow full exhaust!! txt me for pics