Could be Corrolla, Corona, Celica or few others. If you are thinking to buy one in a junk yard for $20 (could happen, but not likely).
Jim and Gimpsters advice is the best there is. 10 bolt (not 8") 6.7" ring gear.
There are som "kits" I have seen to build your own for around $80. You still need to get it all welded (Straight) and buy gears and axels. Axels also available in a kit form.
My advice; Buy a complete rear end that is race ready. If wrong gear, sell or trade for the gear you need.
Steve