New can.
Delkevic 450mm Oval Stainless Steel Silencer to fit FZS600 FAZER (1997-2003) KIT0604 - the reasons I've got this one: I like it, its shiny. Cheap £119. Comes as a compltely full kit: the oval can, link pipe, all brakets, inside seal on the link pipe, even red tube with red silicone. Quality kit.
450mm keeps the sound low hence I keep the baffle in too. Happy neighbours - probably :-) and bonus no headache for me too LOL.
INB4 if you want low deep rumble sound get V twin bike. IL4s are for screaming...