Get a pair Pyros,Remove the turbo,Drill the exhaust manifold for the probe,tap,install probes.Reinstall turbo.Wire up Pyros and go for a ride to make sure they work.Now take a couple washers with a hole that will fit over the rod with 2 thin nuts on the front of the FDC.Now cut a slot in said washers the width of the hole.Weld a little tab on each washer and grind both faces flat if there is any weld sticking up.Take a pair pair of Pliers or a thin screw driver and pull the threaded rod out enough to slide a washer behind the nuts.Do this one at a time and test drive till.If done right,this way will make it easy to go back and forth with fuel settings.Running light you can add more shims and watch the pyro if you wanna show off.If you gotta heavy load I would use one shim only since it will build heat under a load much faster and harder.