<html><body><div style="font-family: Arial; font-size: 12pt; color: #000000"><div>David,<br></div><div><br></div><div>Why RN9YCs? Think the manual calls for RN12YCs (manual not handy)?<br></div><div><br></div><div>Bob<br></div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><br><div><br></div>Neat trivia about Champion and AC Delco, David! <br><div><br></div>Lin<br><div><br></div>Sent from my iPhone<br><div><br></div>> On Nov 23, 2015, at 11:37 AM, David Nock BCS <healeydoc@sbcglobal.net> wrote:<br>> <br>> This is almost as big a contriversy as the Brake Fluid and if you should be positive or negative ground.<br>> We have used Champion RN9YC plugs for all the 6 cylinder Healeys for ever.<br>> <br>> Now if you want a little Spark Plug Trivia, AC Delco and Champion come out of the same building. AC Delco Albert Champion Delco.<br>> <br>> <br>> <br>> David Nock<br>> British Car Specialists<br>> 209-948-8767<br>> www.britishcarspecialists.com<br><br><div><br></div></div><div><br></div></div></body></html>