Can ddec6 MCM 14 litre Detroit be tuned to 600 horsepower

Can ddec6 MCM 14 litre Detroit be tuned to 600 horsepower & 1850 ft lbs of torque..it's deleted already with 515 horsepower &1550 ft lbs torque

 

Also I like to keep the stock holset turbo on...cause it puts out 42psi boost on a hard pull but it lacks torque& horsepower & I know it's all in the tuning.... also what upgraded manifold I can use that will bolt right to the stock ddec6 head& turbo...it's a 2009 columbia 14 litre Detroit

 

I believe it's at 1550 torque now but I could of sworn I seen it where it said 650 ft lbs torque available..as I mentioned this morning...it's dpf& egr deleted already & the filter gutted out .dpf filter..but it lacks the torque & it's at 515& think 1550 torque

 

So are the early model 14 litre blocks& heads the same as the 2009 ddec6 14 litre block& head...I really like the stock turbo..it's a holset factory turbo &wanna mk sure i buy the correct exhaust maniold for the head and stock factory holset..it puts out 42 lbs boost on hard pull but it falls on it face because of torque settings & not being tuned properly I'm guessing..also if the holset turbo ever goes out...that will be the NXT turbo I go with 17702 BW

 

Also what type fuel mileage you get with your current setup 525 horse & 1850 torque

 

Thanks will do that today