couple of questions
 

On a 12 bolt diff using a solid spacer instead of a crush sleeve, what is the recommended torque on the pinion nut?

Back-halfing my Malibu.What is the preferred method of attaching sheet metal to frame,other sheet metal, etc.? Welding or rivets? I don't want a rattlely piece of crap. Also, what have ya'll found that works best for sealing joints? Brand names? I was wondering about urethane windshield sealant, any thoughts on that?

Thanks for your help. Ken

Re: couple of questions
 

When I put new gears in my Moser 12 bolt I use the solid spacer you are speaking of. I do not recall a torque spec in the paper that came with the spacer and shims. What I did is I kept adjusting the number of shims untill I got the pinion bearing preload I was looking for. I tightend it with a impact as you would with a crush sleeve. I can tell you the solid sleeve/shims is the way to go especially if you are setting up a new rear and trying to get the proper pinion depth. It beats the hell out of crushing multiple sleeves while trying to get it just right.

Re: couple of questions
 

Tight as you can get it, then stake the nut/threads.

I used genuine GM seam sealer, kinda messy, but it works well and hangs in there.
The aluminum is riveted in, the steel is spot welded.