I'm going to assume that you now have an AUTOMATIC transmission
and that is why you want to drop a Manual transmission here.
There are a LOT of posts in this group covering the subject of transmission swapping.
To go from Automatic to Manual requires a lot of parts,
and it is just easier to buy a Contour with a Manual transmission
that has a blown engine and swap over your engine.
I'm not saying that it can't be done, but it does require a lot of parts and a lot of time.
If you have a lot of time on your hands, and you are making this a project car,
then by all means go and try it out and let us know how you did.
The only Manual transmission made for the Contour is the MTX-75.