I would actually say the contrary. And by far. If you carve out the space that's needed for the BLOCK that contains the strings, springs, it will always be waaaaay heavier than any of the wood removed. No wood will ever weigh as muc has the tremolo block inside a strat. Not even if it's an aluminium one. Springs too. But as it is, it's not about strats but Teles in this thread.