See you have a 87 ford last of the 6.9 . Ran a 87 f-heavy duty roll off with a 6.9 375k ran strong after pump and injectors. Sold at 425k with a banks turbo custom exhust intercooled.
My personal ride is a 97 heavy 250 2x4 7.3 psd, 197,500 on the clock. Ebay lot deal name brand big mozzle injectors at 175k. IH dealer comptuter tune, the ih cousins "t444e" range from 160ish up to 280ish, mostly was just computer calibration changes. My 215hp motor is dealer service mangers quote is 285hp rating after scan and flash, i drove home changed injectors never been happier.