Tow Bar Towing

[hoser]

Hi guys ok I am thinking about towing a 69/70 chevy 2WD truck home it dont have a engine or trans (less weight) so I was thinking of getting this tow bar http://www.blueox.us/Towbars/towbars.htm down at the bottom right the " Ambassador Tow Bar" I looked for a base plate but it looks liek they dont make anything that old so I will have to make my own, what I need to know is the 69/70 2WD frame going to be the same as my 72 GMC 2/4 ton 4x4 so I could use my 72 frame as a templet for making the base plate?

Thanks in advance.