8v injection to twin webber help

Thinking of going twin webbers onto my 1.8 8v gti injection what is involved? 

Manifold
Twin 40 or 45? 
Facet fuel pump
Sytec pressure regulator
Heat shield 
Filter socks 
Throttle cable? 

What about injection vacuum pipes and wiring ecu etc want to make sure I'm doing the right thing