There is a 2 core J truck radiator that will bolt in to the stock M715 opening...the hose connections are both on the wrong sides though...the upper, one can use a flex hose, the lower....need to have a radiator shop move the outlet to the other side.
And its only a 2 core....it will be marginal for the stock 230 engine aand will run hotter than a stock 3 core does...I know this from experience.
The best ways to go are outlined in this thread:
http://m715zone.com/vb/showthread.php?t=3928
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!