No problem Sanya. Just to reiterate, clear the ecu of fault codes and see if any reappear (pop the negative off the battery for 5 mins). If they do, search the guide to checking what they're pulling up (its easy stuff). As per the heater matrix, you'll need to reconnect the pipes coming out of the bulk head back to the engine to get the heaters working again, but be prepared for a leak as that's the only reason why i can imagine someone would bypass the heater matrix. Again...that's a dash out job so either put a couple of days aside or send it off to a reputable garage. SRD is your friend.
Regarding the smaller stuff, keep an eye out for second hand bits in the for sale section (discs, interior bits, etc), but Keron at Extreme Performance will have most, if not all, on the shelf so he's worth a call. Just search him under the members list.