you wont get hold of one short notice and certainly not cheap, your better of taking the plunge and buy brand new for ref http://www.preptec.co.uk/used-equipment/ they have a used str450 for sale
ive allready rang preptec its sold, there is one on ebay at the moment £600+the dreaded but no drive board http://www.ebay.co.uk/sch/i.html?_o...0.Xstg+str+450.TRS0&_nkw=stg+str+450&_sacat=0
yep and its a 32amp so would need a 5kv box with 32 amp socket, drive boards can be ordered direct from spe
I no longer do site work, so I've listed mine on ebay. http://www.ebay.co.uk/itm/252480178455 I intend to replace with same model but in 240v Transformer is too heavy and buzzing irate me
