Here is the info that I have so far...

Isuzu Axles
2nd gen trooper 12 bolt is 62" WMS-WMS

Jeep Axles
1979 wagoneer is perfect for SAS. 61.5" wms to wms.
1978 and 1979 where the only two years that still had passenger side drop and used the big bearing spindles.
1974-1976 were nice becuase of the flat top knuckles, but used the small bearing spindle.

Chevy Axles
Dana 44 - 1971-1980 - Dana 44 open knuckle.
(note: pre '73s had small 260x axleshaft u-joints. These are the same size as Dana 30s).

5.38's are available

All 3/4 ton axles after mid-'78 used internal locking hubs retained by locking rings.
After 1980 all 3/4 ton chevy front axles were 10 bolt...?

~67" WMS...?


Ok, so my reasoning is this. I can obtain a Wagoneer axle pretty easily but I can't see lifting my truck anymore and keeping the same axle width. I am planning on running 37/38's which is just about the limit of the Dana 44 with no modifications. I want to retain the same bolt pattern as the rear Isuzu 12 bolt. Dana 44's are about 200-250 lbs lighter than the Dana 60.
So here are my questions...
When searching for an axle online is there anyway that I can determine the difference between a truck with a 44 and one with a 10 bolt?
Which dana 44's had 6 lug and which had 8 lugs?
Can I simply swap in flat top knuckles that I find on eBay to a Dana 44? I know that almost all chevy axles have the driver side flat top.

I've been doing research for the last week and now I'm completly confused. Hopefully someone can give me a link that I may have overlooked or answer some of my questions to clear it up for me. Right now I'm pretty much <img src="/forums/images/graemlins/confused.gif" alt="" />