I looked in my JC Whitney catalog and they have repair panels in the truck section for $18.95. They have them for full size Ford trucks and 82 to 92 Rangers. There's nothing about Ranchero but check to see if one of them might work. The panels are 16"wide and 48"long. They also have full size Chevy, S10 and even El Camino. I need to patch my 73 Ranchero so let me know if you have any luck.