Motor mounts
74-78 Cordoba & monaco mount motor Rt Frt 3817122
3642810 74-78 Cordoba & monaco R MOTOR MOUNT U3817122,3642818
and the other is
73 val, dart, satl, coronet, charger engine mount left front w/ 340
#3642813
Try playing with the numbers here;
Mopar Part Number Search