These started life as a set of fabricated Moroso Big Chief alum. valve covers and at some point looks like some one mounted the burn down breather in two different spots and welded up the holes then polished the covers. Here is the part that makes a little uncomfortable to sell these as functioning covers. The main rail is .090" alum. which seems pretty thin. Covers are 3.00" tall and have a set of homemade 1.250" burn down breathers that are made from steel and tig-welded together.
Be sure to look at all the pictures good before purchasing.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.