I pulled the cat off my 95 RRC today and noticed the O2 sensors are different from the 96 Disco. Anyway to splice the Disco O2's with the RRC. The problem is the RRC is a three wire and the Disco a four wire. I am guessing it won't work but maybe somebody can prove me wrong and save me some dough! If not where is the cheapest for new? I have been quoted 181 at Autozone and 281 at Kragen. Looks like WIll Tillery!!