Bulkhead put in backwards?

[Snoop Dog]

Heres the situation, I know it is only a difference of about 1 inch, but I need to put the bulkhead for my sump in backwards? threads and screw piece would be inside the sump, gasket and black female threaded end on outside.

Has anyone else done this? do I need to add an additional gasket to the inside? will it leak?

thanks for teh help!