Yes! if its just the transmission, and no bellhousing, its a 25 minute swap, i think there might be about 8 or 9 bolts to remove including the driveshaft.
no
Not a chance.
Yes, You may have to change the tranny support and shorten the drive shaft but it will fit.
If the C6 is the big block version you may have to hammer the tunnel to make it fit. If it is the small block version it will fit with no modification.
Yes.
Not unless you can make universal mounts for the transmission, and you will have to figure the dimensions for the transmission and if it will fit JUUUUST right in it.
There will be differences with the input shaft, and possibly bell housing, it depends on the transmission model and engine you are trying to match up, not every 1990 had the same engine or transmission. Good news is that no matter what you decide you want there is a conversion kit available, just check out the mustang mod sites.
if they have the same transmission then most likely but the 1990 is prob fuel injected and the 85 is not
No, it will not.
no 84 and 85 change out.
A better question is why would you want to put a ranger transmission on a mustang
no only fits 84,85