Now this is a very frank,serious,stupid,humble opinion.
Sam,you want to show off your system and you need a lot of place to fit all your amps and subs and stuff so why not use a tata 207(dumb i know but read on!!).It looks ugly in stock form but i remember seeing the one done up by DC to look like a dodge ram.That was on helluva eyecatcher!!!.Just imagine...metallic black,xenon lamps,free flow(sounded pretty good for a diesel).The cargo bay(call it wat u like)will carry upto 5 tonnes and you get enough space for all you components it wont rattle too!!.I read its comin in a 4x4 version.The 207 will handle 18 even 19'' rims.Get hydraulics to lift the cargo bay thingy and you heve a head turner!!A proper kit,good damping maybe vertical doors;come on you have all the resources....arush,psycho,ananth(for those engineerin queries)navin,sam,Rudra sir(for 1 hulluva photoshoot)mclaren,jb,gunbir,viper.Though you might not need the other ice gurus;you want this to be a t-bhp car!!!
Think about it,everyone is gonna be using the cars you mentioned the corsa is being used by rockford fosgate,lightening audio has a skoda and a xing,polk has a palio and a xing too.Not very long before someone does a swift.Think out of the box.Also you can get a 207 for the price of a swift.Hope this is of some use
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binz