What a fun thread.
Definitely a ton of variables but car for car,
if the Cobra driver had experience, 600 HP and slicks, I'd say it's all that 2-3 gear shift as 750HP mentioned. It's certainly the one that kills ME!
Old 427 S/C times are a thing of the past. Some of us are pushing an EXTRA 150HP and more.
Please make sure you post the results and BE SAFE.