the NHRA ruling is that if a fuel line goed through the driver compartment it need to be in a channel, so if you place a aluminum or steel "sealed" channel in there it will be your firewall, also the ruling is with a fuel cell in the cabin you need a firewall between those strut towers.
In case of fire or explosion this gains you a few extra seconds to stay alive.
we just had this issue with my rail dragster, we relocated the fuel cell in front of my feet and brake master cyl, but there is absolutely NO space for lines underneath. So the solution was to run the lines and use pop rivets and sealant on a "u channel" to protect me incase of impact.
even with it that way some racers refuse to get near my car, due to personal prefferance and fear of incident.
But many top fuelers have run forward of driver cells, with in cabin lines, crashed said car and been fine. Good luck! and BEAUTIFUL BUILD