My 2000 chrysler 300m just got radiator changed and thermostat its not leaking antifreeze but does over heat and starts making a gurgling/boiling in my reservior please help me what is wrong

it sounds like a bad head gasket.... most likely damaged from the thermostat and radiator being bad ....// you can get a block tester and check it or pressure test the system and remove the spark plugs and see if one of the cylinders fills up.....its possible that there is an air pocket but it would have bleed out by now

Could be head gasket or you could have air in the system. To check for bad head gaskets let the car cool down all the way then remove the radiator cap then start the engine. If you see bubbles right away the head gaskets are bad. If it takes a while to see bubbles it might not be the head gasket, but does not rule it out.