played around with the 69 sender unit trying to make it fit but ended up putting a new outlet pipe into it and welding the sender unit on to it and bending the float arm to suit.
tried it on the side first and then the top where it ended up going.
this is the finished one and you can also see the extra breather pipe I welded at the back of the tank so that I had no slowfilling problems or the tank trying to collapse in
this photo shows the little reservoir/sump underneath.
and the finished item.