Sweet man. i bet it sounds good! If I were you I would give it a full tune-up which is changing spark plugs, air filter, fuel filter, oil filter, oil change. Another thing, since you dont know as much about mustangs, you should buy a haynes or chilton book for repairs. Mustangs can be easily repaired compared to many other vehicles. For your next mods, Go for the short throw shifter, I have the steeda tri-ax and its great. Don't get a throttle body since it doesnt do much when your vehicle is naturally aspirated. Go with gears,or lower control arms, maybe even subframe connectors