I ended up using 12mm inlet fuel line, thou ive heard its not needed to upgrade the standard 8mm (i think its 8mm) line, its up too you really.
Just a local metal fabrication place did the welding, labour was around $200, new line was $70 and around $100 for the fuel filter, clamps and small sections of hose and the tank and pump.
I think from memory i only paid $50 for the tank and pump.