going to run new fuel pipes on my mk4 combi ...was originally a 1.3 petrol

i am now changing it to rst engine runnig efi and bought a new uprated bosh pump 0580 254 941

so i was looking for the dia of the copper fuel pipe/rubber hose i need to connect the pump up

also can i still use the 1.3 tank or do i have to use a rst one ????


thanks

tommy