rear underbody drawings to scale
 

Has anyone measured the rear section of the Toyobaru's underside yet?
As some may have realized, the front and midsection are well covered by plates in order to allow for good airflow, a feature unfortunately missing on the rear section.

I want to change that and have already worked out a plan on how to.
Now I'm going to need a detailed drawing of that section, complete with screw holes, lenghts and distances.
Can anyone who's already done that (aftermarket part suppliers maybe) send me that data?
I'll also settle for good photos or anything at all.

The point is not to have my work done for me but to safe time and probably add precision (I don't really have the equipment to lift and study the car from below).
Also, there may be others who'd value that information as well, for whatever reason.