i need some help i have a 1990 lumina 4 door sedan and i was told that a berretta body kit might be able to fit onto the lumina if this is correct could someone please let me know thanks

Would be a pain. The person who told you that is probably confusing the Lumina with the Corsica. The wheel bases are different, the bumpers are different, everything's different. You can put Lumina Z34 ground effects on a Lumina sedan, but the side pieces may not fit right. I haven't seen a 4-door Lumina bodykit yet, but there might be one out there.