Does anyone know if the bed mats marketed for the El Camino will fit in the wagons? or if maybe there's a carpet sold for the wagons that I haven't been able to find? Specifically an 80 Malibu wagon. I found a partial carpet mat on auto anything that only covers the rearmost area behind the rear seat but would like to be able to cover the whole area when the seat is down. Thanks in advance for any info available.