its horses for courses' , someone will always be quicker than the next. BUT for your car + 3k you will not find a similar specced jap rocket , when its all built and running . imho 6-8 k is the bare minimum needed for a 400 bhp jap rocket . you can do , that for less with any charger conversion . but the choice is yours . i dont tell porkies, ive done lots of track days etc, santa pod since i was 18 , im now 35 ( eek ). i know what works and what dont. as ive owned enough cars to last a lifetime and all have been modded.