[Mr.N]

So the 3/4 ton knuckles should be fine?

Follow Sig, read the flattop knuckle article. Looks for pics at the bottom ...

 

[Mr.N]

Its a chevy 44,but my only question is if it is a big bearing 44,will that make a diference?

Yes, just needs parts from a big bearing 1/2 ton. 78 and up

Hint: search on using 10 bolt stuff...