If you experience the plug fouling problem you can get a plug cleaner from Harbor Freight for 20 bux, the other option is to run it hard to clean the plugs up but that isn’t always viable. I think its worth the hassle to run the vintage race intakes and performance setup. I have a friend with a vintage drag car with a race hemi that has a rat roaster, same fouling issue. Check the read end ratio also, I am running 4:56 gears in a Dana 60 with the auto and a 4500 stall converter. I believe the original Hemi Darts with 4 speeds had 4:88 gears.
