don't know if thay are shorter, but shocks from a Commodore wagon will fit into KE30's. Also HK Monaro fit as well :)
Also, where are your tyres rubbing? Top, outside or inside. If it is inside or outside, you may need to change your wheels or mod the guards (ie. remove the lip on the edge of the guard). If it is the top, you may need to look at a lower profile tyre if you want to lower it.