Peter,
It is interesting that there is an oil cooler pipe attached to the front of the radiator. Mine does not have that luxury. Here is mine from the back showing the shroud. I presume that yours has that as well. My radiator was in perfect condition but had been removed from the hull in 1958. The local radiator chap only charged me A$125.00 for a full strip down, tube clean and reassemble. It was like a new one inside.
Regards Rick.