is there special rivets for mounting these plates . top two are firewall plates , one fj40,one bj40 the red one is the door jamb plate . also any recommendations for cleaning without removing the lettering . and also where does the firwall one mount .i took the bj40 one off and need to mount it to the fj firewall . but it does not fit in that spot on the fj so i was wondering where it mounts on an fj40 firewall any info would be great P.S. i don't need to use the red one on this truck Jake S.