Converting 70 Blazer to front disc

[Spf79]

HEMI43 has an awesome fix. I would really look at his setup.

Ok, I just went through a rebuild of a dana 44, I had to replace the spindle and outer axle shaft. Looks like it was in an accident, the bottom of the rotor was ground flat. Also, lol - the PO ground off the end of the axle shaft. I think it was because they could not figure out how to get the snap ring off.

Anyways, I did some wrecking yard searching for my parts, it is my understanding that you will need everything from the knuckles out, (including knuckles)... Good news is that the knuckles and everything else is interchangeable between the Dana and 10 bolt. This gives you a fair amount of options to choose from at the wrecking yard. Here is a list I found during my adventure that laid out axle lengths. I just read on another forum that the outer axle shafts between 10 bolt and dana 44 are the same, but the inner axles are different... I am not sure about this. Might be worth your time to go to a Pick-N-Pull.

Check this link out as well.
http://77cj.littlekeylime.com/flatop_knucles.html

Again, Hemi43 has the right idea, just get another axle and swap parts. Let me know how it turns out.