"Made in Mexico" Import Strat UPGRADE trem- Solid STEEL block These are a good idea for your guitar of atleast the steel block which they sell seperatly I think you need the trem arm they sell also cause well your broke for one thing and cause the thread size is different I think.
Ya to take the bridge out thats what do do, When reinstalling the six screws (plate mounting ) don't overtighten them either. And when ya put it all back just do all in reverse. Put the trem claw springs on before ya screw the claw springs in.
The trem block in the MIM is made of Zinc the steel ones are nice to have .
If you are not plannig on using the trem at all or for some time to come you can block it with a piece of hardwood.