Its nice to suggest things - would hate to do it to my own car

As above - get wide core cutting drill bit and go mad lol. Do you get smaller alternators with enough output - must be a bit of weight in them. Alloy brake calipers are usually light from what i have seen - discs with alloy rotors but not too big - the list is endless Are coilovers lighter than a standard setup?

As rich said - it'll lighten your wallet too