You will need 1/2" extensions and a impact 6 point socket, I forget the size but I have it listed in my write up. Harmonic balancer replacement
You will need some PB blaster and I find some heat helps a lot. However, I really don't see a bad crank sensor causing a sputter. That'* typically a bad coil(*), bad wires, or bad plugs. If your getting a P0300 code it'* random and might be the ICM, if you have a P030x code that'* always the same cylinder it'* a coil, wire, plug, injector, bad valve spring or possible chipped piston.