Slant Six "2-pack" intake?

I ran across this on ebay. Custom intake, maybe for a slant, two 1-barrel carbs (1 missing). Anybody know the history, or if it really is for a slant?
http://www.ebay.com/itm/mopar-slant...ries&hash=item1e8035567c&vxp=mtr#ht_141wt_630