Interior once damaged is damaged..if its too badly damaged, u need to change dashboard.. easily available from sher shah but will cost some heavy amount. U can use dashboard cover as well. Rexine/ leatherite stiching can also be done, if plastic is just faded and not cracked..either way expect 15-20k easily for a proper job. I know restorers in Lahore .not useful for u 
as u are in Karachi
