I read on forum or at RAT they rust real quick..Wish Leonard at D and D would make them for the classic...Claims they were selling less than 1 set a month and the killed them a year or so ago....To bad we could not get a group order going....CES run 170 a lb and that's pricier than a whole cat back for my 60K Infiniti M37! I would pay 900 for a CES but no way I will pay 1700.....I will stick with the sewing machine sound.