For alot of imports in Ireland they are registered in their log books as non-turbo's etc... And if they check up the model via the registeration plate then it would likely be wrong. You are better insuring it as the car it is which is a Glanza V EP-91 TURBO.
thast a good quote mate, you have a section on the online quote system that allows you to list your mods. what would be best though, is to fill out all the info online then call them quoting your reference number.