hi every1 iam new to this and having a mustang i just bought 1 off a friend of mine 86 convertible l.x 5.0 and for only 600 dollars.its all stock and i want to make it faster but dont know where to start.it runs good now but i want it to run great if you know what i mean

so what should i do any help will be great sorry if i sound so much like a newbie iam just excited and ready to start modifying my new baby thanks all.