Why do you want to swap heads. You will not gain any displacement and the 2.4 head really has no advantage over the 2.0 head. Why don't you just swap blocks and put your 2.0 head on the 2.4 block. To be honest it's not that hard of a swap depending on skill level. Another note it is not a n/a srt 4 motor. You can use parts from the srt motor but they are not the same motor.