I run BCP7ES's (#5030) in my Eddie-headed 496. I would foul out with anything 6 or under. 7's stayed NICE and clean, looking perfect after 21 dyno pulls.

11.33 @ 118.46 on motor
10.75 @ 125.35 w/ a little spray
Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race
Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023