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My 2010 truck currently has the lc9 5.3 engine with the 6l80e trans. Stock motor has afm, vvt, and flex fuel. Im kicking around the idea of a 6.2 swap. If i bought a 6.2 out of say an '10-12 year truck, how hard would the swap be? Im thinking not too hard since i already have a 6 speed and vvt/afm/flex fuel. I have a GM MDI, access to all gm programming systems and hptuners, so reprogramming/tuning any module or computer isnt an issue. If im not crazy, im thinking it would be a direct swap with programming and a 6.2 engine harness. Am I correct?