Replacing Drain Hose D In Evap System
 

Hello everybody I am here today because I am trying to get rid of my check engine light which popped up the other day. A rodent chewed through my drain hose D in the evaporation system and have recently got an accepted offer to get a new gas tank. Great right, however I am going to buy the tank regardless as its a good deal but is it possible to replace the the hose to begin with?

I know that the hose is connected to tank with two big circular "cups"? To be quite frank I don't even know if those come out.

Any help or feed back would be great! Thank you.