Stripe Measurements

[Alphamacaroon]

I've seen a ton of different sets of racing stripe dimensions online for Roadsters, but I'm wondering, are there any "standard" measurements people are using for period racing style Coupes? Are people generally tapering them, or using the same width from front-to-back?

Thought about just using the Roadster measurements, but feel like there are enough differences in body styles that it warranted a quick ask for advice. Any help would be greatly appreciated!