This is a 1994 Peterbilt 379 EXHD with a 3406B Cat, 13 spd transmission and 373 rears. It is on 24.5 tires, fronts are excellent rears are not. American class interior missing radio and CB. Needs paint on top of hood and cab - to really do it right needs whole paint job. Runs good, shifts out good, we have been using it here local to move hay and cattle on the place.