The petrol tank should soon be sorted! i took it up to ad metal spinners (http://www.admetalspinners.co.uk/) today, who were soooooo helpful. they are going to make the collar that i can have welded to the tank to hold the fuel pump in. All i need to do now is find a nice helpful person at a fiat parts department to find out how the pump is help into the tank so i can do the same. Then maybe a tank breather adaptor and we are there. I will add a picture when its all done.