"THE GENUINE AMG MONOBLOCS ARE WORTH MOST OF THE MONEY ALREADY". At £800, maybe; not at £1500. Money pit, I'd say; most old Mercedes are at that sort of mileage, unless there's a sheaf of receipts to show that the un-obvious hidden faults they develop - not exactly routine maintenance, but they need sorting eventually - have been attended to. Don't ask me how I know...