 CONT: When Porter and Val start driving down the alley towards the  Chows car they are initially in a 1970 Chevy Nova (round  headlights, no front indicator lights, and no Chevy emblem on the  grill) but just before crashing into the Chows car it becomes a  1973 Chevy Nova (different grill, squared off lights, Chevy emblem  on grill) when the two cars impact, the side shot is of the 70  Nova.