[Unreal]

Where the air filter is doesn't matter nearly as much as the intercooler and efficency of the system. Running a pipe to pick up cooler air cost more power because of the bends/restriction. If you want to make less power you could buy a vortech inlet tube but most people are ditching them and just running the filter off the blower like ECS.

As Blake said, paxton and vortech are the same company. Paxton uses billet cases and vortech cast. No different in performance, just bling looks really.

Either way, the SLP pulley, intake and tune will have to be swapped out.