Learned piston/plug deal back in 1957 when I built my first 302 chevy SB. Back then I was big into "more is better". Those 11 to 1 Jans pistons at 0 deck and a FI heads made a mess out of my plugs. I removed the pistons and a friend of mine that at that time was a FORD guy that run at the Salt Flats fly cut the pistons and cut a flame path in the top.I ended up with a trick setup by just DUMB LUCK..He also cut the top off a GM fuel injection and welded a plate on top for a four barrel and I had the first tunnel ram and didn't know it...DUUH..."those were the days" SCRAP