what should i expect to pay 8 3/4 chunk?

what should i expect to pay for an 8 3/4 third member???
what's the big differences in the 741,741,and 489 casings?
the gears preferably with 3.23 or 3.55 gears?

and if anyone has one, make me an offer i can't refuse and i just might take it off of your hands..


one more thing, what year did they stop making the 8 3/4?