Nummberdummy I found a cluster back out of a econoline 1/2 ton van it looks just like the back in my 1979 F150 except the bottom takes three screws and the F150 has only one screw hole on the bottom. The number is E1UF-10848-AA, the numbers differ slighty from what you listed as an interchange will the one I listed work on my 1979? The plastic is different seems stronger.