My first IH Cub Cadet was a Original. About 12 years of age, back in '89, I was driving it to work pumping gas when gas was .79 cents a gallon. I lived in the country all my life so you could get away with stuff like that. I get a lot of time driving my 71. My 72 is a work in progress.
I had a 73' GMC 1 ton, and was nothing cheap about it then. But I agree with putting the gas tanks inside the frame. With a 14-bolt 456 Dana rear, big/thick frame,9 leaf from factory on each side, and huge brakes the truck was a power house. Later it had a bran new, 7k Chevy Vortec 383 stuffed in it. {Summit Racing is down the road from me} I also seen a 49' International pickup drag a new Dodge Cumming turbo diesel around in a tug of war like a rag doll.
But having my cub cadets, I have had a lot of fun!