I think it is personal opinion. When Roo Man built my dragster a lot of work went into the height and width of the cockpit. I’m not a small guy
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so it ended up 21 inches wide, but he kept the height as low as possible because we were building a period correct looking dragster. At the time the other goal was to build it to be able to do rounds in ET racing.
I’m now putting a blower on it and moving to index racing and still have no regrets that we keep it as low as possible.