Hey all, I have a weird question. I just pulled the 2.76 geared center section out of the 8_3/4 in my challenger to put in a new 3.23 posi unit. When I pulled the old unit out there was a peice of 1x1 inch by 3 inches long square steel in between the differential gears?!?!?!? See attatched picture? I'm assuming it means that whoever put this thing in at some point didn't have the correct parts to hold it together so they just threw the steel in there to keep the gears from folling out? Anyway I'm just curious if anyone knows why it really might be there? The weird thing is the thing worked perfectly for me for well over 50,000 miles since I bought it in 96.. Also does this mean the diff is scrap, or can I still sell it?

Thanks,
-Jon