call an insurance broker they are free and will find you the best price for your circumstance.a broker is free as they get their commission from the companys.
which was when I went in for renewal and said I wanted to lower the car, they checked with someone else yadda yadda, and they were fine with that.
they have some value system, 10 or 20% of the value of the car is the limits of the mods or some bs..... but i just said springs dont add value or performance....
can get toyota quote online too, if you cant make it to a phone etc..
but with my GT-T, its insured for agreed amount, $18k, so by adding 3k mags and a few other bits and pieces, its not over the 20%
plus factory tints are a bonus!