Well it depends what you are going to do? Are you going to use the AUM ECU? if so, you will need to keep the DBW throttle pedal.
If your going for a ful AGU conversion (ECU aswell) then you will need the cable pedal box.
Why not put a AGU head and inlet with the AUM VVT and throttle body onto a AUM block? Even a AGU block might work depending what sensor differences there is.