Bartamos,
My truck has the six lug wheels, the original front and rear axles. The only things that are not original are the 261 engine and the 5 speed transmission and the floor panel for the shifter. I do still have the original 235, 318 transmission and floor panel, so the truck can be returned to original. Only other thing would be the wheels, as the original wheels were not with the truck when it was purchased.
My brother had a two wheel drive Blazer which I believe was a 72 and it was a six lug front and rear.


Tommy
59 apache 1/2t
261 short stepside