Bev,
The fuel pressure is set by the regulator so if its a factory EFI set up/fuel rail then just leave the standard reg on.
The pump you will need depends on what you are going to do with it ? If its staying naturally aspirated then a VL pump (Bosch 070) will do the job no worries at all. It is recommended of course to run a seperate lift pump and surge tank. There are a number of ways you can set up the fuel system without loosing all your boot space.
Hope that helps.
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