just bought a 4 banger coupe need performance

[dyphicult]

i just bought a 4cylinder mustang coupe for 100 buck it has 30,000 miles on it it has a dented fender which i have fixed i bought it to put a carbed 2v in it but i put it in a 82 capri as ive been driving around in the coupe im starting to like the 4 banger it has 8 spark plugs on a 4 cylinders and i would love to put some nitrous on it does anyone know any thing about these 4 cylinder engines