I might be interested in them....let me know how much you want, ill speak to the fella that remaps my car see what bhp i could take it to with them, iv got the gsr260 and have hks 272/272 but he said id have to upgrade the springs and retainers if i put them in and dont really want to take off the head off.....so i may have a pair of hks 272's for sale, how much are these worth to people??