The fuel tanks you can get them new aftermarket on ebay or bodywork shops. The fuel tank sender unit is a bit more harder to come by new. It would be used on ebay or breakers. The 1.4, 1.6. 1.8, 2.0 EFI all used the same pump IIRC. Just make sure that it isn't the mk6 as many of them didn't have the push fit connectors on the pump IIRC and you would have to change them.