Stock Denso plugs for 96-01 Cobras are T16EPR-U15
Stock NGK plugs for 96-01 Cobras are TR55
Stock Champion plugs for 96-01 Cobras are RS12YC
Stock Autolite plugs for 96-01 Cobras are 764 for half thread and 104 for full thread. Either will work in your car. (Half thread was designed for machine installation at the factory: Autolite - Product Info)
These are all copper plugs, strongly recommend copper...