I'm not getting into this shit slinging war as both ideas (boosted D and J series) have thir good points. The J swap is goofy as fuck with the horrible fitment, but they do 2 things: Make a civic sound mean, and make a civic MOVE! You will soon see bolt on J swapped civics hitting 11s with good tuning. not to mention all the turbo ones popping up now, and the fact nitrous is only one WOT tap away.