Diff conversion axle question

[tctomasc]

So I went to pick n pull today. I was so tired and hung over I managed to find a J30 and ripped out the axles about a minute before closing time. I get all the way home (an hour drive) and come to find I grabbed ****en 6 bolt axles. I'm not really sure how I did this because I counted the bolts I pulled off (Or at least I thought I did), and I have a diff from a J30 that is a 5 bolt. It was a 94 J30, so my question is should I just go back and grab the diff off that (Please say no, but are the 6 bolts any better than the 5's?), should I grab a different year J30's axles that will be 5 bolt, and if so what year would that be, and if niether of those, would an 89 300zx (Z32) N/A have 5 bolts?

New axles:

New Diff:

I have tried search and used it to no avail.