I'd just plug the ends with newspaper or the like and give the whole lot a liberal soaking in WD40. Not much more you could do really unless you can keep it in a de-humidified box.
I would plug both ends and wrap it all in cling film. This should be a cheap and easy way of preserving it. Q Where are you storing it? as a loft would be an ideal place.
Maybe stuff some silica gel bags inside each end before you seal it up..... Perhaps not comparable, but lotus carlton std exhaust was a strange mix of very low grade magnetic stainless, with mild steel baffle tubes which happily rusted away without any pre-warning of exterior rust.
Find somewhere inside your home warm and dry, preferably under the stairs. Just make sure the misses doesn't mind finding a new home for the dyson and christmas deccys !
Ok cheers chaps. So it's basically low grade stainless and assume there's some mild steel somewhere inside so douse the inside with oilmist as much as poss.
Unfortunately living in a bungalow means under the stairs isn't an option.
