rear drive axle question

["john572905" <jrc2905@xxxx>]

I have finally put my D back together. There is something not right, 
I can feel it acting rough and some noise from the rear axle when I 
drive it. I took the entire rear suspension off the car and cleaned 
and regreased all componants, replaced the transmission seals and 
sandblasted and rust proofed all the parts including frame, plus all 
rebuild on the brakes,
My questions is;
1. The rear drive axles, is there a correct way to install them. the 
manual talks about a inside and outside axle connection, how do u 
tell this.
2.the manual calls for 270 pounds of torque on the axle nut, my 
torque wrench only goes to 160. I torqued it to that and then some, 
could I have over tightened the axle bolt? I did take the axle 
bearings out and regreased them.
3. what car is the brake master cylinder from. I need one small part 
and do not want to by the whole master cylinder right now.
Any help is appreciated, I just want to drive.
John Cabral