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I always thought that to make an aftermarket part you'd need to have the car. So that you could measure things and then test fit the final product. I wonder where they got the LFA?
being a collector's car
this will only counter-intuitively ruin its value
While I tend to agree, (I would want to only buy an unmolested version of a collector car) tons of other aftermarket tuner's make lip kits for collector cars like the Veyron, they tend to make them "special edition" cars however to keep the value or exclusivity or whatever.