OK..
He used this method as suggested by me..
http://www.team-bhp.com/forum/sound-...ll-wagonr.html (Simple Space Saver Install for a WagonR)
Check out the front doors in the above link posted by Blue raven
few pics of the same...
He did not finished the install. He removed the speakers to put it in his cousin`s 800 which is in Chandigarh or near. And he did not installed the new pair as he was a little tight on the financial side.