But for a race car why do need fuel sender?
Not being a smart arse, serious question...
The Zed never ran one. I knew roughly how much the fuel burn was and then just put that plus a bit to cover the number of laps to be done. At the end of the weekend, drain the tank of the avgas and put in the road ute or Fairlane for a bit of oomph.
Depending on dash and other electronics being used, couldn't you work out fuel level from use and then fill from there based on number of laps to be done?
And the foam bricks won't move around or break up when you shove enough in the tank, hardest part is getting the bricks to the corners away from the opening where you put them in. Not sure who got the tank from the green Zed, but it still had the foam in it when I sold it.