'73 up drum to disc conversion track width change

72bluNblu said
I like these specs, but I’m not entirely sure how accurate they are for different option groups. Like the ‘70 specs list the rear track at 55.6” and the ‘74 lists it at 55.4”, but the width difference between a 7.25, 8.25 and 8 3/4 is quite a bit more than that.

Absolutely, no argument. I should have added that I wasn't saying it was a definitive answer, only another data point.

Way too many discrepancies in the factory data to say anything is for sure based on something like this.