I guess it would probably help to know quite how 'fat' you want to go with the sound - that is, how far from the normal strat sound do you want to go? Do you want just some heavier single coils? a stacked single coil sized humbucker? a full size humbucker?
Locking tuners like those from Schaller, Grover, and Sperzel are popular upgrades on the Strat.
There are a lot of different ways you can go with the bridge, but that depends on what your reasons for replacing the existing one are.
Im talking hard rock/metal sound. Was thinking to maby just put in some mighty might rails ?
Ill prolly go for some schaller ones.
Im not sure about changing the bridge but this strat is a 1962 reissue that is 15 years old .... I just want a bridge i can do decent vibrato on ? Prolly a wilkenson v?