Do I need both hinges, or can I replace just the passenger side?

You can replace one side if only that hinge is worn or damaged. If the driver side is still tight and responsive, a single replacement works fine. Both hinges wear together over time though—if one's failing, the other's usually close behind.

Will this hinge work with my original hood latch?

Yes. This hinge is designed for factory mounting points and compatibility with OEM latch geometry. The hood will align and latch normally without adjustment.

What tools do I need to install this?

Basic socket set and wrenches—you're removing four bolts per hinge and supporting the hood while you swap them out. Have a helper or hood prop ready so you're not wrestling weight during the job.