KP61

ok i wanted to swap a 86 corolla rear end into my toyota starlet but when talking with a few people about the swap i was told that the celica rear ends would bolt in and be better for the swap due to the celica rear is wider and would fit the car better than the corolla would. also was told they are easier to find as well. now my question is has anyone heard of this and does it bolt up and what years and models of celicas would work so i could start looking for one and final question is were there any with disk brakes? thanks