I have a very bad hesitation when idle and surges really bad. the codes it throws is bank 1 and 2 lean, map sensor, misfire, and i dont know if it is at all contributed but it sounds like a bad vacume leak around the intake but im not sure, i read something about a plenum leak on these 5.7's

Welcome to AF. Low fuel pressure, clogged injectors, any air entering the engine unmetered, dirty maf, watch for K and N problems as they can contaminate the maf.

Welcome to AF. Low fuel pressure, clogged injectors, any air entering the engine unmetered, dirty maf, watch for K and N problems as they can contaminate the maf.

is there any known problems with the intake or plenum gaskets on these leaking?

It is possible, discharge some propane around the upper intake, this would cause a change in engine reaction, just be careful, obviously