I don't know the answer. I'll have to perform some research. IIRC JD was very stingy with SGB information.
Update: It appears from viewing 4240 parts catalog that steering console is separate from SGB. My research continues.
I have only seen 1 30 series that had the old style steering like the 20 series. I am pretty sure as long as it has the sandwich type steering valve that tilts the cabs should interchange. Might be able to tell by serial number?
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