Body parts and trims are super rare to find and consequently they charge you accordingly, if you have luck to find them.
Recently, i was in search of a few items, Side mirrors (Rs.4,500 a pair), Rear spoiler - couldnt find in Chah sultan, Rear center garnish - couldnt find in Chah sultan, Body kit - No luck.
If you get a beaten up car, few of the mechanicals are also hard to find in good acceptable condition. You will end up putting modified version from some other cars.
It would be best to spend generously on a good, rust free and complete ride.
My 2 cents...