Hey guys, I am looking to add a surge tank to my car.
I am torn between two offerings / brands:

1- Deatchwerks: DeatschWerks 2.5L & 3.5L Modular Surge Tanks - Race Prove Flexibility | DeatschWerks, LLC
2- or one of the offerings from radium.

both in an internal pump.

I wondering if there are any pros-cons I need to consider with either brand. I am looking for overall feed back.

Also, can retain my factory fuels lines inside the car? I keep being told I need to put them on the outside.
Thanks