If I kit my car will it add more value?

I have a 2009 seat Leon with only 24,000 miles and full service history. I was thinking of selling the car but after I body kit the exterior, I have seen a kit for £800 and £200 for fitting. I was thinking mybe getting this done will add more value and will sell quickly. It is a sports already but I wanted to make... show more I have a 2009 seat Leon with only 24,000 miles and full service history. I was thinking of selling the car but after I body kit the exterior, I have seen a kit for £800 and £200 for fitting. I was thinking mybe getting this done will add more value and will sell quickly. It is a sports already but I wanted to make the car a K1 CUPRA top of the range model. I do want the most from the car as I have lost 20% value after I drove the car out of the court yard. Please let me know if this worth doing? Umz
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