You can pick up a Bentley Manual from Amazon that will tell you all you need to know about what you actually need to put in the car based on the codes for the transmissions.
Sounds like you have the M50 motor, which will help the parts store people get you the right filter. I use the purolator (or pure one I forget) White box blue writing # L28812. If you change the plugs, make sure you get the Bosch +2 copper plugs. These you will have to special order online or get at the dealer. I didn't and I ended up frying my coil's at the tune of $60 x 6. Ouch.
2002 BMW 530i
1997 Ford Mustang GT
1995 Honda VFR 750 (For Sale)
1964.5 Ford Mustang