I bought these awhile back, then sold the van...still new in box. Originally paid $241 shipped and I will let go for $141 shipped to you in lower 48 free. No tax of course.
Large Powder-Coated Semi-Gloss Black Hi-Flow™ (#LBLHF) with STAINLESS RIVETS INCLUDED
Here's the link to the product on the hood louvers website:
Large Powder-Coated Semi-Gloss Black Hi-Flowâ„˘ - Hood Louvers | RunCool | Hood Vents For Your Vehicle -
Will send you original receipt of $241. I accept paypal or money order.
Many threads on the forum regarding install of these on the hood of an E350, they look great and help with moving air out of the engine bay.
Contact me at firstname.lastname@example.org