If it works don't fix it. I like Autolite and Motorcraft plugs myself. Never had much luck with Champions in big blocks. Is this racer friend a local living at the same altitude etc?
Yup, same thing I'm thinking. The guy races at the same track as me, Lebanon Valley Dragway, West Lebanon, NY. He claims he's a tuning expert and told me my car was slow for the parts into it and he even spent about an hour checking things over in the pits. One by one his theories crumbled as he checked it out. The reason the car was slow (mid 11s @ 116, best 11.48) is because I had the tiny Schumacher try-y headers and had not fine tuned it. The only tuning I had done was set the timing to 20 initial and 38 total and I have 78s in the front bowls and 82s in the rear on the carb. It ran quite well so I left it alone. I'm installing Pro Part full length headers right now along with an 02 gauge so I can fine tune it. Heading back to the track on Sep 26th for Mopars at the valley so I'll see how it does. And I drive it back and forth to the track 220 mile round trip.