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Besides it cleaning up the smoke...how much bhp was achieved?

I'm 100% critical of my engine, I rely on it for as a additional source of income. All air forced into a cylinder during the intake stroke is supporting combustion - it's compression ignition (Lots of air, small injection). Anything not "burnt" is wasted energy, just hp going out the tailpipe...

I'm not critical. If someone spends time & money to put one I respect that. I just don't understand what you want to achieve. A cool whistle noise when your going to 7/11 to get a slushy? Turbos don't blow cool air, unless the air has been substantively cooled through an intercooler. Sucking...

Ya I understand, it's a recreational use vehicle.

14k isn't bad for a rebuilt. I'm sure there's some guarantee behind if it's done professionally. 425 hp in a 8.3L is pretty sweet power to weight ratio. That thing would blast off to the moon.

I can guess that the lobes are bigger, producing longer ramping events. Strength & less wear as well.

With taxes, pump work/labour, freight here to me it's about $26 XXX all said and done. Another option is finding a B model out of a truck or whatever and sending it to them for the pump work. No warranty obviously. But I roll the dice with anything used. Boy oh boy, I'd love to stuff a K block...

If I buy a new Cat Reman from my Finning dealership here in town and they will do the pump/timing work to 500 hp. The dinger is it's an extra $3500 but I keep the warranty as long as they do the pump work.

I have no idea why guys spend their money turboing these engines. If it's just for a whistle, well ok I get that. The NHC250 is a pile of crap....pile of crap for being utilized into these military vehicles that are the backbone of any armed forces. I wonder why you'd want a underpowered engine...