I have to replace the radiator on a 756 project JD. I went to JD; they have little to NO info about this JD. When they did find something; it said "UNavailable". Also, did a thorough search & could not find one on internet. I took it to a radiator shop & he said NOT repairable; so I am turning to you all to see if you can help me with the model. He said that "acid" had eaten it up. There is NO serial or model number on the unit. If I can get the model number; I may can track one down. The JD serial number is M00756A420042. I found 1 on internet; but do not know if my unit is the same. Thanks for any ideas.