Slightly different from mine which is a 1.6 Mk 2 based car so I will describe it just in case its similar to yours. Two pipes come out of the standard fuel pump/sender unit at the tank. One is a pressurised feed pipe and the other is a return. BOTH go to the fuel rail at the front of the car with one attaching to the inlet and one the return of the rail via a short flexi pipe. I did all mine in 8mm copper from the tank to the front of the car using some clips I have which take two 8mm pipes and one 5mm brake pipe. Cost about 40p each but I had to buy 100 :-)
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