In 30 years of wrenching Ive seen 1 car run good with Bosch.I wish I had a dollar for every one I had to replace.Ive run Autolites in Mopars since the 60s.Champions in them never worked.I only run Champions in the new Mopars we have.The NGKs seem to run great in my 440 with 12.5 domes on the street.We do have some old NOS Mopar plugs fo BBs.I was going to run them in my 57 and the 62.Just couldnt bring myself to open the 50 year old packages.Rocky