Are you for sure its for an 80? The guy selling doesn't really know. I am not sure of the late model trucks, was a 70 for the gassers, or did all the 2500 get 80's in 2000? I know it looks way differnt then the trac lok in my 70 rear, I have never been into an 80 yet.
If it indeed fits an 80 and is a ls, my brother needs one for his 94, but can't justify a new one, and is tired of one leggin it all the time . Guess they are pretty expensive.
Michael