Was there a 1 ton Burb?

[PsRumors]

Growing up my parents had a '77 & '87 3/4 ton burb. Both had semifloating rear ends, both were 2wd. I am in the process of purchasing an '85 k20 burb. It is a ways away and is being shipped to me.

This k20 has a full floating rear axle and a quad shock option up front. Am I lucky enough to find a Dana 60 / 14 bolt combo under a Suburban?

If memory serves me there was a 1/2 ton, light 3/4 and hd 3/4. There wasn't actually a 1 ton suburban, was there?

Thanks for any info

Ron