I have one of these cars. He is mistaken about the advertised horsepower. He says 266, that is for the Q code 351. The R code was rated at 275 HP. Otherwise a nice article. By the way, glad that you are back up.
The marriage of a solid lifter 1972 R Code Mach 1 and Grabber Blue exterior is hard to beat; and with open fields in the background to boot! Beautiful!