Here again the guy has the LD340. Why spend the money for another intake when this one will work fine. Sure it has a little higher RPM rating and performance but there is nothing wrong with its low end performance either.
As for in the first post the poster also states that he is thinking of putting on an Airgap in lieu of the LD340. No point in that, there is so little difference in performance (if any) that the swap out would be money down the drain.
Very probably get the best low end out of the OEM cast iron intake of the standard Performer which is not much more than an aluminum version of the cast manifold.