8 3/4 center chunk

[7dartdemon2]

I am looking for a center chunk for my rear. I would like to get a 489 or 742 case with a 3.91 or 4.10 posi. does anyone have anything to spare.

 

[mod5v]

Where you located? I have a 742 case complete ready to bolt in 3.91-1 cone type suregrip. I just removed it in favor of a 3.23. It is quiet and the suregrip is "rebuilt" by me at my last job where I had acsess to a surface grinder. I also added extra springs and shimed the side gears back to proper depth. It is equiped with the small 7620 type yoke. I was useing it with royalpurple synthetic. I am asking 450.oo plus shipping costs. Or pickup is fine.