Help with bulkhead

So I got this overflow from a fellow reefer for a very good deal, however the dude put the bulkhead in backwards. It is an Eshopps PF-300



The space it is in is only 4 inches long and 2.5 inches wide. The bulk head itself has only like .5 inches on each side long and pretty much zero space wide.



I do not care about ruining the bulkhead, I just dont wanna break anything in the overflow (its acrylic).



Any ideas at all on how to take it out?

















Or if anyone has any idea on how to safely attach a tube/pvc that I can use to go to the sump that wont disconnect?



Thanks!