this was in my door panel if any one can tell me what the hell this is that would be awesome (kno it has something to do with sound but im rewiring my whole speaker set up so rip out?

ok here it starts with the better camera
this is my interior a little cleaned up

ok here is where the questions begin i took of all a/c stuff and all interior a/c out so that includes my heater core (buy the way FS) any way i also took out the plastic piece in the middle and noticed that there is a tube that comes from my radiator that goes inside well i thought that i dont want coolant dropping all over my floor board

so i was looking at the component tin the middle and noticed it had this radiator looking thing in it so i removed it and put it on but i wanted to see if this would work please let me kno if not will have to put the whole thing back on or is there something i can custom fabricate to make it work like this to where i wont have to have that big plastic piece? here is what i have done..

and i also painted my engine bay up a little.