ok, you might want to re read that and edit it, because i had to read it i think 6 times to figure out wtf you were saying, and i still really don't know.
since you have a 1.8, you won't be able to use one of the studs. did you purchase it used? if you didn't, it should have the nismo on the top like mine:

the parts you are missing you can probably get from home depot