Alright cool thanks man I appreciate it do u know wat year specific axels I need to somehow find haha
If I'm reading you right you want to get a 14bolt full floater for the rear and a Dana 44 for the front. An 86 will have front 10 bolt which is actually basically the same as a Dana just a different maker. Some parts interchange, I am not sure if 8 lug hubs will, otherwise just get a ten bolt 3/4 set of axle spindles and bolt them onto your existing tubes. The easy way is to the entire axle assembly obviously.
The 14 bolt will NOT bolt right in. That is an urban myth it is, however, an easy swap otherwise. Let me explain that I am familiar with the pre-80 vintage frames so I KNOW it's not a straight across swap in them. YMMV. However, aside from the spring perch center/center difference of about an inch they will bolt right in with new u-bolts and spring plate. Of course the shock mounts on a 3/4 ton are different also with both on the same side of the axle so that will have to be dealt with also. And the brake lines are different so an adapter will necessary if you plan on keeping the existing lines. Then thee is the issue of the brakes on the 3/4 ton, the swept area is about three times as big as a half ton which will have a tendency to lock the rear end to soon- mighty fun on wet roads. It's nothing that cannot be overcome, just go into it knowing it is not a complete straight across swap. I ran 6 lugs in front and 8 in back for over eight years on my 78 K-shorty. I broke one of the 14 bolts in that time- from operator error of course. One I had from a van and the other was from an unknown source. There are three different widths of 14 bolt ff rear ends mostly due to the hubs. If you want more articulation get a van rear end, it's about three inches wider at the wheel mounts. This will stick tires out about 1-1/2' more than otherwise. Or allow more backspacing in the wheel.
Disclaimer- I got some of my information off another website just yesterday. The parts about relocating the spring perch's, brake lines, etc. is from experience. Axle widths and whatnot from the other site.
Here is everything you ever wanted to know about the 14 bolt....
http://www.pirate4x4.com/tech/billavista/14b_bible/index.html