My brother sold my grandpa's 63 GMC about 3 years ago to a group of metal salvaging pirates that happened by the house one day. I didnt talk to him for a year. If I could have found it then I would have used it, but it was probably used to pay the federal debt to China.... I bet it has been turned into steel rebar for China's interstate system. Boy there is some salt in a wound... But since I couldnt get it I settled for a replacement.
Oh and you should be able to do 30-75 sideways...