Okay so here is my idea but not sure if its worth it.I recently bought a n42 head had it port and polished rebuilt.Next im using a n42 block and i wanted to have it bored over to 3.0,Have a friend that works for nissan so he said he can get me 6 ka24de pistons for 150 so im happy there.Running su's on my l28 its a 240z so using those. Am using the l24 rods from my 240z. Now my question is me boring over to 3.0 is it gonna make that much of a difference or should i just forget the boring over and live with my head work any ideas.Im a student so i cant really spend to much.I have all these parts already so please ideas would help thanks.