Typical results from most customers will see about 100-200* lower egt’s.  This will fit all 7.3L pickup trucks with the tp38 turbos without the exhaust back-pressure valve (NON-EBPV) pedestals from 1994.5-1997.  It will also fit the pedestal with the ebpv actuator.  Most will purchase the non-ebpv pedestal to also get rid of the potential, yet common, spot for oil to leak out the actuator arm seal.