Nah mate, no modification at all, 4 screws and it was fine. Came with a few different face plates to get it flush, was a pretty easy swap...besides for the fact that I downloaded a wiring diagram that was completely wrong, which shat me off after taping everything up and no should from and speakers :S haha, much better than stock, surprising what difference it makes to listening to music...are you looking at putting one in??


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2005 WRX STI