Okay so I recently bought this sbm intake manifold in hopes of doing a 4 barrel swap on my '87 Dodge D100s 318 sometime. But before I do anything, I'd like to know what this intake manifold might be off of, or if its some kind of aftermarket piece. Its aluminum and looks like its for a thermoquad application. It seems odd that its aluminum because it looks stock/factory but has no other markings besides the part number on the top and the number 4 on the underside. I just don't know enough history on these things so if anyone out there can point me in the right direction of where this intake could have come from it would be much appreciated!
