It's all stock except for three chamber flowmaster mufflers and factroy replacement K&N air filter. It's a ex- cop car from Andrews,Tx. Not a Highway Patrol car but a real cop car. When I bought it it came with new quarter windows still in the box straight from Ford. I have also installed new wheather stripping and new door belt felts. Also new arm rest pads. I plan on installing a stroker motor i9n it.(427 SB).