Looking for support in ordering right parts from US

[mibars]

I’ll be doing some rear axle and suspension work due to what appears as a noisy bearing and worn out bushings and I’m looking for support to double check if I’m ordering the correct parts.
I have a 1990 Suburban V1500, 350 TBI, 10 bolt axles, 700R4.

My goals:
• Fixing a noisy diff (most likely a bearing)
• Improving front end handling (lots of flex on spring bushings)
• Adding highway friendly LSD (I had a car with Torsen and liked how helical LSD performs)
• Increasing rear brake bias (rear is so weak despite RWAL - I guess due to more weight in the rear than in an empty pickup)


Installing a rear Truetrak & new bearings:
• Diff: 913A481 ebay or Jegs or whatever will have best shipping option to Poland
• Bearings LM102949 and races LM102911 (2 each)
• Wheel bearings: ACDELCO RP6408 Rockauto
• Axle Seals: On the bearings (am I right that no extra part is needed?
• Pinion bearings, shims, seal, crush sleeve Rockauto (diff bearings would be unused)
Anything else is needed?

Installing larger rear pistons to make the rear brake work a bit more:
• Pistons from a 14 bolt <-- will they fit? I am aware of a different brake line thread. I'm calculating approx 28% piston area increase between stock 15/16 to these 17/16 pistons

Front suspension bushings:
• Front and rear of the spring (I guess they are the same)
• Bushing between shakle and body mount - Can't find it. Is it integral to the shakle?
• Stabilizer axle bushing
• Stabilizer frame bushing (32mm)

 

[NLD79K10]

I normally order a lot of stuff through Rockauto and Summit Racing for my K10 in the Netherlands, shipping is quick and not too expensive. I tend to prepay for customs fees as well so I get it quicker.

For the noisy diff, my preferred option would be to just go for a differential rebuild kit rather than sourcing the individual parts in the hope of having everything needed when I start the job.

The leaf spring shackle has the frame side bushing integrated in the shackle itself.