Even in ND you can look on the 'bay and see stock 318 poly 4-barrel intakes selling for $500 or so, the single quad intakes bring more than the dual quads, bare. And the Weiand 7503 sells for about the same or actually a little less.
So if you have a bunch of'em you can get rich, just send me one for the tip!
R. (ND native)