i run a trackday fiesta, however it suffers from fuel surge when the tank is less than half full although the tank has a standard basic swirl pot and uprated pump installed in it.
So i am thinking about installing a separate 2 litre external swirl pot, question is can i feed the swirl pot from the existing uprated high pressure in tank pump and then just install a new inline high pressure fuel pump to the fuel rail?

im thinking the swirl pot will have a open return line from the in tank pump back to the tank so shouldnt generate excess pressure however believe normally pratice is to use a low pressure high flow pump to feed swirl tank and a high pressure pump to fuel rail.
But rather than more work to take tank of, change pump etc can you forse a problem?

You can yes, drop a standard fuel regulator in before you feed the pot then the pump will see normal operating pressure and use 'returned' fuel to feed the pot and take a return back to the tank.