HELP WANTED : NEED HEADPIPE !

hey dudes, im almost finished with my 81 seca 550 superbike build. superbike bars, braided brake line, kaw. zrx 1100 rear shocks, sticky tires etc but i need a 4 into 1 headpipe BAD ! ill take a full system also but have a muffler im gonna run. would like black but chrome will be fine too. want something that hasnt been smashed shut or rusted through. i know someone on here can help me as you guy always have. please send me a email at snakezrx@hotmail.com as i dont have regular Internet access at the moment im located in memphis, tn. as always thanks for the help, LONG LIVE THE XJ !!!