Is this the infamous Bandit collector box? SS pipes with a mild steel collector box, what a great idea from Suzuki. If you can get a piece SS pipe at the same diameter as the old mild steel one, grind off the old muck and weld that on. PM me if Toph can't weld SS, as i know someone in Wootton B who can do this for you. Or you can go down the pro repair route http://www.banditmania.co.uk/exhaust...&_cans.htm see half way down the page, but either way you need to get the existing downpipes off and guarenteed the header bolts will be siezed in. Spray them down with wd40 or other anti sieze for a week before you attempt cracking them off.