1/2 and 3/4 ton question

[69ChevySB]

Hi folks, I have seen an old longbed truck sitting in my grandfather's scrap yard that has been sitting there for quite a while. I was down there today looking at it and by the looks of the hood, it's either a 1969 or 1970. It says C20 on the fender so it's a 3/4 ton.

My truck is a 1969 1/2 ton Shortbed and it is lowered, but I want it to sit at stock height. The 3/4 ton i'm pretty sure is just sitting stock height, but I have one question...The 3/4 ton has an 8-lug wheel base and mine has a 6-lug wheel base. If I were to take the coil springs off of the 3/4 longbed and put them on my 1/2 shortbed, will it put my 1/2 ton back to stock height like I want it to? or would I have to go find coil springs off a stock 1/2 ton? also what's the overall difference between the springs? will the physical appearance of my truck be different if they had 3/4 ton springs instead of 1/2 springs or does it not make a difference? all help is greatly appreciated. Thanks!