The rules state that a panel has to be made to separate the cabin from the "trunk."

The intent I believe is to create a barrier betwixt the driver and any fuel. We have been building a Volvo 850 sedan as well as a wagon, and I was told that for the wagon we would just need to create a "box" around the fuel cell where it sits in the cabin.

However in the sedan right now it is running the stock fuel system and no fuel is even routed through the trunk or cabin, no filler neck, no hose, our other cars have filler necks and the such, but this car is ALL external.

We are under a deadline and the rear firewall panel would be quite extensive...is it needed on a car that has NO fuel routing or pumping or ANYTHING in the cabin or "trunk/hatch" areas?

Thanks in advance.
Jonathan