Have you purchased a car with only a deposit after a test drive? You inspected it closely inside, outside, under the vehicle, under the hood and inside the trunk and everything was clean and unobstructed? You go back and pick it up and when you get it home and open the trunk it is loaded with extra parts? The owner didn't want the burden of storing the extra parts and passed them off to you? I have had that happen numerous times over the years, some of the parts were part of the deal, some a total surprise. Most of the extra parts had no value at the time, but some did. I always put the extra parts on a shelve and then sold the car. After about 40 years of this I got to the point of knowing I would never need any more of them but guess what? ALL OF THOSE PARTS HAD VALUE when the time came to sell them. I sold most of them on ebay and was always pleased with the price they brought. After all, it was all profit. I will give you an example. I purchased my avatar, a 1933 Essex Terraplane convertible in 1968 for $875.00 needing a restoration. The 354 Cadillac V-8 had to be rebuilt too. In a box of extra parts I never used when I sold it in 2009 was Stewart Warner winged speedometer, cable drive tachometer and oil pressure gauge. I listed them as a set on ebay and guess what? They brought exactly the $875.00 I paid for the car 41 years earlier.