Shannon's don't care that I've got a front-mount in my 240Z , 2.8L turbo with after-market ECU, custom brakes (MC, adjustable prop-valve, braided lines, 4-spots & discs/mounts), or fibreglass valence - but they know about all of it. So does Transport SA, and it's all approved.
You are best advised to ask what matters, and find out whether you need to tell your insurer about a particular modification. There are some that they won't care about, and others they will.