I cut about 1 inch off the front of an AMT 1972 Chevelle kit and attached it to an ERTL AMT 1968 El Camino. All the '68 side trim was removed and Model Car Garage '70 Chevelle etchings will replace it.
The 1972 needs wheel moldings and back up lights in the lift gate. Also, I swapped the 1972 dash.
Still have some fit issues.