turbo ????

hey gang was talking to a buddy of mines today.. (truck driver as well as myself) an he has a holeset turbo that works on a dump truck.. he got it for his old truck cummins 425hp could or would this thing work on a big block:D:D and if so how much power can it make on the motor??? just a guess on hp....would it be hard to use this turbo on the big block????i dont know alot about them but have read a little and watched alot..lol thanks mike :glasses7: