Hey I was wondering if anyone can tell me the difference between the GSR valve springs and retainer and the Type R ones. I am looking at them and alot of people say they Type R valve springs and retainers are better than the GSR ones, the reason I'm asking this is I want to do and all motor setup some time soon but using a GSR head and I want to have all my information in order before I decide to build a LS/VTEC or even a CR/VTEC.