I have a Chrysler Canada Truck Shop Manual ,WM4283, covering Dodge Series DF-DG-GH Series, also Fargo FN-FO-FP Series. On page 7.4 Fig 2 there is an Engine Center Sectional View drawing... the first item, ( number 1 0f 41 parts pointed to on the drawing), is the Manifold fuel centralizer. It show it inverted with the narrow end coming together,( picture a wishbone ), level the the top of the intake manifold. (Unfortunately with the latest windows upgrade? My computer no longer re cognizes my scanner, printer, nor my digital camera). Otherwise I would have posted a picture of the drawing for you....I could not find any text reference mentioning the part...per haps someone else will have more info to add to the topic...