In my experience, you can sometimes influence an inspector to your point of view on a grey area like this. Until your winning denies someone else's differing interpretation of the same rule. The values of those winning will determine the vigor with which it is protested. Then exact clarification will forthwith.
If they make a point of mentioning this, the compliant self says not past any rear point in the outline. The defiant self says past the furthest rear most point and prepare for further clarification and modification.
Was involved in a car that went nationals 2 years ago that had the same thing happen. Took over a year to petition the board and get the car legal through clarification of the rulebook.. It sat out the 2019 season because of it. FWIW, Regional (where the car raced all year) said the mod didn't effect the performance of the car and was fine with it, but it was protested at Nationals and those judges didn't agree.
