they came with different housings depending if it was a stick of auto the stick trans used a bigger turbo that is better suited for a twin turbo 5.0. you should look into the garretts that came on 83-86 TCs since they were better turbos than the IHIs that came on later years.
and just like i posted on his other post people are running twin IHI turbos! they arent going to make ground breaking power and will run out of flow at high rpm but...
it is possible and they are smaller but are suited to stock heads and intakes etc... lots of great low end with fast spool time!
people need to research more before they post ( you cant do this or that!)