Most ebay posts are made by people selling items that they have zero knowledge of....
The posts listing this battery tray say 67-72...which is simply incorrect...we all know the 67-72 is a totally different piece...
The battery tray pictured is actually 73-87 tray...
More interesting is the ebayer wants $35...LMC lists the tray for $ 13...yes, its a repop...but seriously...
http://www.lmctruck.com/icatalog/cc/full.aspx?Page=193