ive heard that HIDs actually run cooler than standard bulbs. what you said about the box running hot is probably more likely
i just helped my friend install his HIDs and they are freakin PHAT!!!

i want some so bad...
im pretty sure that with stock housings, HIDs will not melt em..but you are using aftermarket projectors...so i dont really know
but im pretty sure that HIDs run the same if not cooler than regular bulbs...

but then again im just dumb newbie