Looking at the pic of the yellow car, there is a lot of aero work on the pillar and the sill. Looks like the door pillar has been widened by roughly an inch, and the door "sill" by roughly 3 inches.

Is this the de facto standard? If so, this looks like one of the Crowell cars (?)... can they provide a the same picture with a tape measure showing the measurement? That way we'll know what we can build to.

I would rather have the approved measurements up front so we can build to it rather than everybody getting in a snit when the points race is tight.

If someone can post pics of the same picture of a stock door and B billar, we can get a good comparison of how far the car in this pic has been adapted. No access to my car this weekend as I'm out town.

Dont think any measurements are needed. Keep it simple: : "dont extend beyond the door exterior".