Fuel Tank
 

First job before I could fix the fuel tank was to paint it.  Simple enough using Screwfix Smooth Metal paint - a before and after picture:
The Next step was to think about the fuel sender.  You can simply fit into the tank as the arm on the sender is far too long and you would never get the full rang of movement which will not give a full deflection reading on the dial.  I did consider cutting the arm down to size but as the float was attached to the arm by it (the arm) being bent tightly around it (the float) I decided that I would bend the wire arm instead.  Took a long, long time to figure out the shape of the bend needed, but ended up as below:
Once bent, it was a simple case of drilling holes and using self tapping screws to fix in place.

The next problem was to fix the tank in place.  Before I did that I decided just to cut a few cm off the filler pipe as I had noted there wasn't going to be a lot of room to play with when fitting the filler cap; other builders had seemed to suggest this was a good way forward.  I didn't like Tigers suggestion to use 2 straps to fix the tank as I was sure I would have problems getting the straps tight enough so decided to make 2 clamps that would hold the tank.  Simply, the clamps would be 2 pieces of metal, one on the tank, one below the chassis that the tank rests on and these would clamp the tank down by using threaded rod between the metal.  Pieces of my design are shown below:

Tank Clamp

 To cushion both the tank against the chassis and the clamp against the tank I used bicycle inner-tube.  All went together as follows:
Fuel Tank in place