Denny,
17's were definitely an option on 3/4 tons and
I believe were standard on 1 tons with single
rear wheels. I am trying to find some 17" wheels for mine to help a little with my top speed mph over the 15's.
Jim Carter has 3/4 ton Huck brake shoes listed in his catalog.
http://www.oldchevytrucks.biz/catalog1/0079.html Steve