The springs are 250Ib front and 300Ib rear, which is over 50Ib higher all around than it used to have.
Despite having a cage you have to remember that zeds are not all that rigid and the tyres, whilst being semi's, are not full slicks so it is possible to go too hard. The car is also significantly lighter than a standard zed, which will drop spring rates. We'll try this setup and see how it goes, but the suspension setup is the same as a number of local tarmac rally zeds and they all seem to go well.
The struts have not been sectioned, but they have had the top hat replaced with a solid plate, so there is ~1-2inchs (less front, more rear) more travel gained there.
What I will do is get the car on the road, get the springs settled in and then measure ride height and threaded collar section length. I will then order springs that put the adjustment nut about 50% up the adjustment length at the required ride height. That will give room up and down to adjust ride height.
A lower ride height front than the rear looks good, is slightly more aerodynamic (less lift) and induces more front traction than rear. Having stiffer rear springs and sway bars already, we may end up with a level ride height to get the right balance, but that will come with time and setup