What is this turbo good for?

The 05 holset has way to small of a exhaust housing to work with a v-8gas motor & will spool instantly & be a huge restriction on the exhaust by 3000 rpm & way too much boost. unless you used a friggen monster waste gate with it. what you need for a small v-8 is a whc1 from a 1st gen cummins that has the huge (for a diesel) 21cm tirbin housing then put the 60mm compresser wheel up grade in & that would be good for a hot 273/318.