That is good.
Just in case anyone is interested I have a car that has a host fitted and therefore counts as modified. This does make it more difficult to find insurance although so far as I can see I pay no more than I would for a car that was not modified. If you had modified controls than that would again mean that you would have to declare it is modified.
Most insurance agents do not actually have any interest in offering insurance for modified car. The reason they are concerned is off course related to a desire to have simple methods of setting insurance premiums and as soon as you declare that a car is modified it makes it much more difficult to set an appropriate premium.
There are however a number of specialist brokers/ agents who specialise in this type of business and my experience is for the modifications we have I do not get ripped off price wise. I use Chartwell Issuance but as ever it is always worth shopping around. My wife still has a driving licence which to use she would need modified controls but she now chooses not to drive so I have no experience of trying to obtain insurance for modified driving controls.