Do they mean you can't go lower than the standard model forte, or the standard model XR6? If it's lower than the standard XR6, you should be able to put King Superlows in, which drops the height (in my car anyway) by 23mm front and 21mm rear.
If they mean less than standard Forte - which model? The AU1 Forte update ended up being as low as the AU1 XR6 (pre-update), so the XR was then dropped another 10 or 15mm. The Insurance company really should be giving you a height from the ground to the guard or the headlight, or something to work with, or it's just all too hard.
I know NRMAs requirement is that the centre of the headlight must be no lower than approximately 600mm from the ground. I had an EB that was 575mm and they wouldn't allow it, but would have allowed it at 585mm - hence the approxiamtely 600mm!
Hope this helps.
AU1 XR8 Auto 147.9 rwkw (approx 215 fwkw)
AU2 Wagon HAD Auto
17s, Pacemakers, 3" Intake & Pod filter (The Family Hack)
FPV-XR Club ACT