gibbo frst

iTrader: (2)

hello.. im after a large ish stainless box to weld into the centre section on my saff.. it has a middle box but tiny and i want to quieten it down a bit.. looked on ebay ect and cant find anything suitable unless paying 100 quid and thats worth more than the whole system.
ill get some measurements tomorrow for the gap but just wondered if anyone has something they think is suitable...
or somewhere that is reasonably priced new....
thanks for any help..
jay