Randy's Ring and Pinion has rebuild kits for most any posi.
They contain: clutches, steels, springs, and other small wear parts as required.
They also have bearing, shim, and install kits.
Sometimes Jegs or summit will have gears and install kits cheaper, but Randy's has a much deeper stock of rebuild parts. parts.
Also, when I purchased my Turbo T Limited, it had a 2.47 geared 7.5" posi rearend!
Yeah, it was LAZY up to about 40 mph!
when I started looking for an 8.5", I realized a Quik Performance bolt in 9" would be WAAAY cheaper!
Gears and install kit from Summit, posi from Amazon, 31 spline axles, big brakes and housing from Quik Performance, and I set up the gears on a junk yard punkin, all for less than $1500.00!
I couldn't find an 8.5" that needed rebuilding for less than $2300.00!
And that would have needed a C clip eliminator kit too!
Call Randy's for the posi rebuild kit, they'll have it.
P.S. ALL posi additives WILL reduce the posi clutch effectiveness!
Only use enough to eliminate chatter.
A better solution is to make two right hand complete circles and two left hand SLOW, walking speed complete circles to redistribute lube to the clutches. They dry out from centrifugal force from the lube being pumped away from them in straight ahead driving.
I do this once a week in a parking lot to get fresh lube to the churches. It also makes them last longer.
DON'T USE SYNTHETIC GEAR LUBE IN A CLUTCH TYPE POSI! It reduces the friction in the clutches, reducing their effectivness.
TIMINATOR