Planning on dropping rear differential
and get it blasted what revamps can I do on the diff im not going crazy just any thing that needs attention after high mileage, cause i don’t know much about diffs any suggestions?
I'm confused about a couple of things. What do you mean by blasting the rear diff? Are you talking about sandblasting the axle tube, so you're taking everything apart?
If so, and you're going to have everything apart anyway, do the wheel bearings and seals, check the axles for wear where the go through the wheel bearings and replace as needed, check the spider gears for wear and replace as necessary, check the carrier bearings and replace as necessary. Obviously check the ring and pinion gears for wear. Hopefully you don't have to touch the pinion and pinion bearing.
But I have to caution you, diff work isn't simple. You need some specialized tools to shim it properly, set the preload on the pinion, etc. It's not really a backyard mechanic type of job if you want it done right. I got mine back together just good enough to drive it to the shop I like in town.