Does anyone know what the change to the insurance would be please for any of these modifications? I was pleasantly surprised to be quoted under £300 for a 2 litre with business use for a brand new car that will not be garaged. Got the distinct impression that it was because the car is classed as a classic – will adding any kind of performance kit give brokers an attack of the ‘screaming ab dabs’, or ‘twinging screws’?