Israel received its first F-16s a few months before they took out the Iraqi reactor at Osirak in June 1981. The IAF did some amazing modifications to the news planes to increase fuel load, range, and bomb load...
Ya think?
Not exactly. External tanks were added (as approved by flight testing and engineering and the LOA.
Aircraft are not cars—they require software adjustments and flight testing to ensure the jet cane fly safely AND safe seperation occurs when the “empties” are jettisoned.