Had a gr8 experience with dupont as already mentioned above , if ur car is being neglected then its a separate issue
sometimes u cant force the workers to do the job according to ur orders , they would ruin it and hand it over to u without giving it the proper time
keep in mind that slow and steady wins the race , its the most imp stage, make sure the fenders are aligned properly and replace those parts that require alot of denting , metal parts of this model are not expensive , i got 4 empty doors for 4k from bilal gunj , get a good set if think that ur doors are not in good condition , eg has an egg type aerodynamics that can not restored to their original shape by these un-skilled professionals
As far as the spoiler issue is concerned , i got an oem looking replica from montgomery road costed me 5k , i was lucky to get hands on it otherwise its like finding a needle in a haystack , not available anywhere , u might find someone in khi or peshawar who can source it out for u