I have a very standard 100k miles Cup in good condition, still on original clutch etc. I am seriously thinking about getting Autolusso to put in a Quaife plus new clutch and single mass flywheel. I appreciate these are good modifications from a trusted supplier and would have no hesitation in putting them in a standard 3lt, but when it comes to the Cup I am just wondering, will it detract and impact re-sale value. What do people think?