Short rear shocks are dirt cheap, just go buy a set it's easier than having to explain to someone one day why the bottom end of your cr was dragging along the ground spreading its petrol everywhere, prehaps an extreme example but think about it.
It annoys me when people toy with saftey items and then only do a half assed job, its like doing brake pads and not greasing the guide pins. Bad_Vn I am not saying you are doing a half assed job as you have done the correct thing in seeking out advice, go to your local auto parts store and ask for short/lowered rear shock absorbers for a live axle VR commodore, when I bought my set it cost me $50 or so.