The Westfield fuel tanks don't seem to have any baffles in them. The tank on the BEC (2003 car) does have a lowered/recessed fuel well incorporated - which is where the output to the pump is located, but it's capacity is tiny and would/did run dry in no time.
Firstly I'd ask the seller if he ever sorted the issue or gave up trying. If he never sorted it, I'd think it'd be easy enough to remove the in tank pump and go the traditional LP > Swirl > HP route.
Ask the seller if the fuel tank still has the lower fuel supply outlet. Hopefully it's not been cut off and the hole welded up.
The other option... using the existing in tank HP pump as a lift pump to the swirl pot. Well it might work. But then your swirl pot fuel system would be pressurised too. Probably not ideal.
RE: light steering. Maybe it was running 36psi in the front tyres

Steering in my zetec car is much heavier than the BEC.
Nothing wrong with steering feeling light though. Loads of things will affect weight feel, especially the diameter of the steering wheel!