[PDubs87Z28]

Alright when i picked up my 3.27 the owner took the fluid out to show me the gears. Now i was ganna put some fluid in it just until i get it on the car so everything stays lubed while in the garage. Now i didn't realize this but there was a tag on the rear that say something like limited slip fluid only(i can't remember what it says exactly but along the lines of that.)Can i get that at any auto parts place? What type of fluid should i put into it when i get it on the car? weight wise
OH and another thing....anybody know of a shop that will do the rear swap or should i just do it on my own?