please note the original speakers come in mehran are 4" inch in dia with a small magnet.
if u go for 6" one you need to remove the plastic plate that holds the speaker and make new holes on the door car plus the bigger magnet will touch with the glass and machine from behind.
there is a brand available named "taec" and "sony" in original size of 4" inch with the magnet that doesnt touch the glass. they are chinese. the teac ones comes with tweeter and the sony ones doesnt have tweeter. the teac ones were Rs. 4500 /- and sony was Rs. 2500/-
My friend installed them in its mehran ad they produce good sound. i will not say they sound like Pioneer 718 but they are much better for internal listening.
search them if u can find. the only alteration u will be needing is u have make holes in the plastic plate and some holes for the speaker grill.
