with internals for high hp on my 7.3 im talkin pistons cams springs... everything and anyone know of someone who bored their heads and if so how did they turn out and which would be good, gettin a gt38r or just a new housing unit with a new comp wheel or a diff turbo, i dont know of any more except the gt38r so if u guys know some really good ones let me know, mainly some that will have less lagg, and can stand up to around 700 hp

 

The downside to a ball bearing turbo is if it fails that ball bearing will rip your turbo apart and then make a trip through your motor. My friend has put the Big bad wolf turbo on his truck from HTT and is it pretty sweet. You might want to call the guys @ crower cams because they have been doing some research on the diesels and they might be able to help steer you in the correct direction

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and or I would suggest an H2E from Beans diesel.
the guys @ beans have alot of knowledge. hope that could help u in the right direction.