If you ordered your gaskets from this site, the sets have the wrong head gaskets. I have gotten 2 sets and both weree the wrong head gaskets. Went to Case dealer and got the right gaskets. I received a refund for the wrong gaskets..
He does state the tractor is a 701B so is definately a 1958 700 diesel. The block casting of A1111 is right for this tractor.
The 830 284 and 301 cubic inch engines use the wider head stud pattern.