Four months ago i bought a 99 f250 superduty its got 300k on the engine transmission is new about a year old and the front end is new. upgraded stabilizers tie rods whole nine yards it was well taken care of by original owner i have the records for all the maintence and services through its lifetime. The turbo is not stock i believe it has a garret powermax turbo but not positive. I wanted to turn it into a project, new exhaust cold air intake and possibly a better intercooler and a banks auto mind performance tuner however i need to know with as many miles on the engine how much horsepower and torque can i safely add without blowing her up.:help:help any input is much appreciated!