i have a 93 automatic ls intake manifold,and i was wondering in anybody knew the importance of the 2 fittings on the bottem of the manifold.one is about 1.5 inches long while the other is about 1 inch long.sorry i cant be more explanitory but i should have pix later today.i do have the helms and it doesnt show a diagram of this.my car runs fine but i was jus wondering if these were some kind of cooling passages?