set of 16.5 in gm 8 lug wheels need help identity

[inkfamous_13]

set of 16.5 in two of them 10 in wide other two 8 in wide. 3 are bright white one is off white ivory. 8 lug,, i think these are really rare just not sure of model that these went on. any help is greatly appreciated. thx have stamped[use only 16.5 d.o.t tires and few other things will post complete pics tomsroow

[bluek5]

Maybe rare, desirable maybe not so much. Very limited selection of tires available. The 8" wide should be 8.25" and the 10" wide should be 9.75" . Here is a picture of a 8.25" wide wheel.