and once done, you reap the benefits for as long as you keep the car eh 
in answer to "why not remove the trim and sound deadening ?" i did that to bluey, and the novelty wore off within 5 minutes lol fwn it makes it too damn noisy, and too insurance/police unfriendly :wasntme: .
bluey weighed in at 760kgs at the local council tip weighbridge, so i guess this povspec/non sunroof one is nearing the weight (and power) of an ST 