me thinks they are wayy to wide...especially out back... Also i dont really think its the right style for our trucks (79-83)
well if he will let you test fit then I say go for it. See if you can test fit all of them to see if you like the stance/look. And take some photos
they will fit. got the same dimension wheels on my 75 and its lower then yours. but the 275's dont make much sence, that would look really weird on such a low profile tire, unless the rear wheels are wider then he says they are. 275 millimeters = 10.8267717 inches so 9-10in wide rear wheels would make more sence