Already got spark plugs. Anyone have any other advice for things to change? Getting ready for the track in April... 
Lol I wish I could afford one right now. It won't be until late this year.fuel filter........blower lol
we dont have ignition wire,we has boots with coils in themIgnition wires, oil change, air filter change and a bottle of Lucas fuel system cleaner will be a good start.
What is seafoam and how exactly does it work? I've always just used fuel injector cleaner...Seafoammm!!!!
Would it even be necessary on a car with a fairly new engine though?BTW it's $10 a can.
Already have new spark plugs, coolant, serpentine belt, and cleaned the injectors.No, not really, seafoam is supposed to clean the buildup on older marine engines and isn't necessary on a properly maintained engine. It definitely can help, though probably won't do much on a new engine. Things to look at/replace:
spark plugs
fuel filter
air filter
coolant
serpentine belt
clean injectors
COP boots and springs
My buddy i just talked to has one... That's not bad at all. I think I thought you were talking about fuel pump haha.It's not difficult if you have a disconnect tool. Check with your local auto parts store as they may have one for rent. Here's a walk-through: BULLITT Fuel Filter Change
And a video:
YouTube - Motorcraft OEM Fuel Filter Replacement on 1998 Mustang GT