(G) Suggest good audio for 5 door mk2 uno

Hi,

i am from india and obviosuly we have only 5 door uno probably what you know by mk2 model.

can nay one suggest me an good head unit with spkers..

and my constraints are tht.. i dont want to make any additional customisation for the speakers..
so i am looking for an 4 inch speakers system..(guess it is 4inch/10cm spks tht wud fit in the housing both in front and rear if iam wrong pls correct me) which can fit into the company provided housing.
(sorry my titel was wrong its an 5 door. but tht doesnt make a deal here :P )
i knew there is no 4inch 4 way speaker system so far.. but can any well knwon guys suggest me to go for an nice head unit for an customsied 4inch 4 way speakers or an 4 inch 2 way system.

lol obviously.. no amp will come into play here...

thks in advance..

(if any hi end 4inch speaker component system exisits. pls inform me)