engine swap
 

can i put a2002 2.7 from a concorde in a 2006 dodge magnum with a 2.7

Take a look at the engine computers. Most probably they will look very different with different plugs and different wiring harnesses. As a result, the engine swap you propose will be a lot more difficult than just bolting in the engine. Chrysler went to a new engine control system around 2004 or so.
Try to find an engine that's closer in time to your car.

computers looked the same i am planniig on using my wring ,valve covers,intake,and plenum.so it would only be like getting a new long block it looks as if i may need to change oil pan, and front cover. are the blocks and heads the same