There are three types actually. Base Model Barracuda (VIN starts with BH), Premium Model Gran Coupe (VIN starts with BP), and Sport Model 'Cuda (VIN starts with BS). Each type had difference, some subtle, some not. The tail panel is your biggest clue: the Base Model was body color, the Gran Coupe was Argent (A textured silver), and the Cuda was satin Black. The Cuda's got the HP motors (340-4, 340-6, 383-4, 440-4, 440-6 & 426 Hemi). A 383-4 was optional on the Base and Gran Coupe models. There are lots of other differences, but that should get you started.