3/4 ton frames...question

[Eagletucky]

I am currently trying to purchase a 66 suburban. The owner wont be able to show it to me for a couple of days. I can tell from the pictures, that it is 8 lug, so I assume its a 3/4 ton. Are these frames taller that the 1/2 ton? Would the trailing arm suspension be standard on a 3/4 ton, or would it be leaf springs?

The reason I ask is I have a 61 truck that i just finished with all new 78 chevy crossmember/rear end/ 5lug combo I installed. I would like to move this over to the burb, but want to have some idea of what getting a 3/4 ton chassis involves.

I have asked the owner, but the truck is at a different location and they cant check for a day or two.

Thanks in advance.