Recently purchased a 2007 M35 Sport sedan. Great machine. However, previous owner installed performance calipers, rotors and 22" Forgiatto wheels. I replaced them with factory equipment. I would like to sell the performance parts. I know the Forgiattos are worth a lot, but I do not know what the calipers are worth. They appear to be Infiniti equipment, but other than the logo, I cannot find any markings. Any thoughts?