I have it on the outside. I have the eliminator pump a step up from the a-1000 http://aeromotiveinc.com/products-page/fuel-pumps/11104-eliminator-fuel-pump/

I also run the pump controller they sell. http://aeromotiveinc.com/products-page/a...eed-controller/

It really helps quiets the pump down at idle, but my car is pretty thumpy sounding to even try to hear the pump.

I run russell brand filters.