This thread is for all those who want to put a sub in their punto but does not want to compromise with boot space. I have used RockFord Fosgate punch shallow mount sub with Renegade ren 850s amp. combination of these fits within 3 inch width.There is absolutely no requirement for big box for sub as bass of this setup is eardrum shattering. wattage of this sub is 300 W RMS @4 Ohms which is well complimented by Renegade ren850s amp. It is a very capable amp at a very cheap price of rs. 5500 from ebay.