Fuel Tank for Injection Engines

[Josh]

Hello everyone, I have a few questions regarding fuel tank manufacture...

I'm using a 2.0 Silvertop Zetec running my own Megasquirt EFI / ECU.

What fuel pipe should I use for my feed and return lines? Should it be rigid or flexible?

I'm using a standard Mondeo fuel rail, what fittings will I need to push onto this?

Which fuel filler caps would people recommend? I'm still undecided as to whether to leave the filler on top of the tank or route it to the rear bodypanel. If I was to route it, how have others done it?

Can anyone suggest a suitable swirl pot and pump to operate at ~180bhp @ 4bar? And will I have to incorporate a sump into my tank design?

What have people been using for a fuel level sender for the gauge?

Sorry for all the questions, thanks in advance for any replies!

Josh