ok so i cut into myheater box a while back to mount a dvd player

i didnt do it dodgey (it still worked with a few custom pipes etc.

BUT now i need to replace my whole heater box, i have another sitting here in a VR Berlina, but is it the same as my executive's?...like i know it has sensor's etc. but surely you can just take em off.

wouldnt the heater box itself be the same just a few little screw on parts to make it 'climate control'

please help