Can the front bumper from a 1994 honda civic hatchback be used on a 1992 honda civic sedan?
What results can I expect will there be gaps or will it fit perfectly?

 

Doesn't fit. The corner lights are smaller on the sedan over the hatch.

Hatch/Coupe use the same bumper and corner lights.

I'm not sure if the hatch bumper won't also travel farther into the wheel well of the sedan. I think the front end is a bit shorter on the sedan to make room for the extra set of doors. So shorter hood, shorter side portion on front bumper, shorter fenders, smaller/shorter corner lights etc.