HI. I have just picked up a pair of civic Type R cams for about $ 400 (used). Im going to put them in my 91 hatch, that has a B16 ........ I wonted to know how can i tell if they are real type r cams ? I read on one of the post the the ctr cams have two prings on them , but one of my friends said that the regrind can have them two, depending on who made them....