What about the grey 315cc ones from a golf g60/rallye?
They work fine for the 60 lads running 230/260bhp.
315cc should be fine, plenty of fuel for a GT2554R and your K04 is a similarish size.
speak to james at dubforcehttp://www.ebay.co.uk/itm/Bosch-315cc-30lb-Injectors-G60-G40-VR6-/131153003373?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item1e8954036d