Im in the process of doing my fuel system in my pickup. Its a pro street style vehicle. Im running -8 line for my feed. I have a fuel cell with a sump. My questions are:

1) The cell I have has foam, can I pull it out and still perfrom well on the street? What are the advantages to running it in a mostly street driven vehicle?

2) My return, should it be one size smaller or bigger than my feed? I have heard reccomendations for doin it both ways.

3) I have seen a lot of vehicles that have the return and/or the vent lines coming out of the cell ran in a coil configuration. Whats the reasoning for this?

4) Does anyone make a reducer that is also a bulkhead? Meaning I can go from -6 to -8 but doing it in a bulkhead through my bed floor.

Thanks a lot. Any other help is appreciated.