What are you guys doing to meet fuel cells rules? I'm talking about the roll over valve or vent tube. Is there a vent fitting I can use instead of the braided line?

Nothing in the rules calling out a "roll-over valve". But I have been dinged in tech over my vent. Rulebook says the tank must be vented outside of the body. This means outside the body lines, not under the car. Aluminum tube, braid, even rubber hose is legal. We put a small bulkhead fitting in the rear bumper area and plumbed the vent to that using braid. Put a small filter in the line to prevent dirt being drawn into the tank. Probably never paid attention to since. Metal panel underneath if it is outside the trunk floor. Proper bulkhead. Proper mounting. Ground on the filler cap ring on a plastic tank. Nothing complicated.

If you look at the floor,I have the vent mounted with a filter on it.

Thanks for the pics just what I was looking for