I do have a brain mate,ive never changed the seats before,bride rails ive been told will only fit bride seats and recaros i cant find anything on the net for there rails find me a link please,the problem im finding is the so called pro,s that sell them are telling me they will fit a gt-t,you go to the dentist he tells you that tooth needs come out you believe him,ppl that selll the rails tell you they fit a gt-t you believe them,ring just jap and ask him if the jjr universal rails fit a r34 gt-t and get back to me.