Well, what you're required to do 1st is do the research, locate the simple instructions and you'll find your way towards the install. Once you safely raise the Bolt and have the tires at eye level you'll see that the springs stretch enough to install the part. When the Bolt is lowered you'll see the difference in height and feel.
Man, what research?
Of course I looked it up and I could not find a piece of information supporting the idea you are trying to sell here.
I completely dislike this mod.
I looked through Amazon pieces that they sell (some are solid, nice red colour, some are clear like yours...) and from all installs I found none of them made the suspension taller. However, I found a high rate of failure. The rubber inserts split, crack, or melt.
What it did, though, was to mess up the spring travel and compression rates.
Your spring travel is shorter now. Yes, the car may seem taller, but 1.5" seems a very stretched fact.
What you simply did, was to immobilize a few turns of the spring in the stretched position. This, in turn, puts more load on the rest of the spring.
As a result, the other parts of the spring will wear much faster what may result in a premature failure.
Going further - if one of the insert cracks when going at a high speed (say bump on the highway) you may be in a deep $hit. Imagine now one front wheel dropping 1.5" when you are going 65 mph. Add a turn to it.
Not sure how are your skills, but no matter how good they are, the car will be unpredictable.
Again, I completely dislike this mod.
It is unsafe and makes the suspension worse.
I like the mod the moment I saw it, because I would like to have more ground clearance as well.
Yet, this one is a big no for me.