Perkins 4.236

Hi I have a Perkins 4.236 engine fitted to a generator set, in a very remote part of Indonesia, and the radiator needs to be replaced, the company that made it are long gone but I can get a radiator made to suit, I think the top and bottom hoses are 13/4in but I cannot get back to double check because of the distance involved, can anyone confirm the sizes so when I get the radiator made it has the correct hose outlets fitted