depending on how the turbo/motor set up/tune is, b17 cams can be better than the stock gsr cams, my brother had the b17 cams in his integra and made 364hp and thought stock b18 gsr cams would do better so he swapped them over when i told him not to and he shot down to 316hpb17 cams, now thats not something u hear everyday...
i wouldnt use the b17 cams.
i really dont have a reason, but trying something new isnt always a good thing..
i just found out that the pistons i bought were the wrong ones so i'd have to sell these ones to pick up a new set, but i know selling the pistons i have will be hard and i dont have $450 to pick up a new set of pistons and get my block re-honed..so we'll see if the build is coming to an end or if i'll keep with it