John, where did the rod end IRS LCAs and UCAs come from? I have modified fronts myself but wasn't aware they were available for the new IRS. Dang I need an upgrade already and my MkII retro-install IRS is only 6 weeks old. BTW what gear oil did you use in the IRS diff in your roadster? Mine has a lot of driveline slop noise and it's a 315 w/ standard ford tracLoc. I swapped to 80-140 oil yesterday as a test but rain keeps me in the garage.