If your transmission grinds when it goes in gear, or when you shift at at higher RPMs, then your synchronizers are worn out. Transmission synchronizers are wear items, just like your clutch or brake pads. They need to be replaced if worn, or as a preventative maintenance on high-mileage transmissions.
This is a 5th gear original Getrag synchronizer for your 5-speed Getrag Stealth/3000GT Turbo transmission.
This SILVER colored synchro is for '93 25-spline transmission.