1. What sort of racing will it be, for pleasure or serious competition?
2. What sort of tyres will be on it?
3. Is the car suspension rose-jointed or bushed?
4. Did you want the suspension rose jointed or bushed?

Due to the light weight of the car, you can actually go a lot softer than you would expect, as normal Escorts are carrying 3-400kg extra weight if you get down to your 1000kg target .