There used to be a company called Proline fuel that had mopar 6 pack intakes that used 3 webbers and they also had a set up that used 3 webbers for the slant six. Check over on slantsix.org (or slantsix.com if anyone is still there) someone may have one. Im pretty sure that proline is gone now seeing as how their website is gone and I can't find anything on them anymore.