Ive got the probe pistons and eagle h beam rods but i put a forged cobra crank in also. Make sure you use dished pistons like 18cc to get your compression down if you plan to s/c latter on. If not get flat heads and you will keep your 10:1 compression. Compression is what you want fo n/a or n20. Also use ARP bolts on everything and be sure to use the torquing lubricant that comes with them (this is important). LOL its funny its always cylinder 1 or 7. Your case it was both but WTF is this a factory defect or what. I stretched 1 and 7 also and everytime i see a cylinder problem its one of them. Just makes ya think.