Ahh, I forgot to mention, one my front left speaker has blown aswell, so I'm just going to replace all four door speakers, but from what I understand, the new headunit wont affect the tweeters anyway...
I've found speakers that I could actually install myself, but they are only available as non-composite(no tweeter). Considering that the wattage going to each speaker is going to be more than that of the stocks (because of the new head unit), do I need to get new tweeters, will the old ones blow out due to the higher voltage, or will it all be fine if I just swap out the door speakers.
Also, I'll sell the panadols for $20 a piece, just nick them from his room and he'll never notice...