I usually get $950 for posi rears and they don't last long. back in march/ april I was getting as many as 4 calls a day probably 80-100 calls within a 6 week period. more demand than supply up here in the north. I would suggest listing it on craigslist and put a pic and include your phone #
also use key words like grand national rear 8.5 Malibu monte carlo 442 cutlass and somebody will snap it up