1/2 ton 2wd to 3/4 swap?

[Burmanater]

I currently have a daily driver 84 swb c10.lowered 6-7 in the front and it's got an axle flip in the back. It's got a 350 with a th350 trans. I'm wanting to take it from the current 5 lug setup to possibly a 8 lug 3/4 set up like a camper special? What all would be needed?

I'm thinking of going with the full floating 14 bolt rear but I'm wondering if there is an axle width difference.Also on the front rotors and spindles can I get away with just a rotor and caliper swap? I want to keep my drop spindles.

I also plan on swapping in an 6.2 and a 2wd sm465 4 speed. I've got all the parts for the 4 speed swap from my 87 swb parts truck so no parts hunting there. Just need to source everything for the 6.2 swap.

I want to be able to tow a car trailer. Before anyone knocks the 6.2 Idea I know it can be done and know what to expect. It's a daily driver most of the time and a hauler second. I'm thinking I could knock on 30mpg with this setup. Right now since the 350 is hopped up I may be getting 10 if I'm lucky cause the 2.56 gears in my truck make it feel sluggish at 55. The sweet spot is closer to 65-70. I've got 255 70 r15 tires on it.