[tcrist]

Just thinking out loud here but here goes.

How about creating a picture of sorts of a Cobra. Side, front, back and top views and then put places for dimensions such as wheel base overall length & width, tracking (front and rear) cockpit size to a certain location, seat height, and length from seat back to the pedals, ECT.

Where ever you want a dimension to put in the identifiers A,B,C, ECT and then in a list area people / manufactures could input their dimensions.

The idea is for the dimensions for all makes be relative to the same locations. No guess work that way.
The dimensions should be for the standard manufacture design, not for already modified by the owner. I think that is what this is all about anyway.

I could try to get the information on the Classic Roadster unless DV already has it.