Best way to vent a single nippled tank

I’m attempting to fix the previous owners shotty job to vent the gas tank on my 72 Demon and am looking for opinions.
The tank has 4 vent nipples on it. 3 of them are crushed closed. The remaining one has a short 4” piece of fuel line that points to the ground. When I fill the demon up, it dumps fuel out of the fuel hose until, I assume, the fuel in the tank gets below that point.
I was planning on running a new piece of fuel line from that nipple to a point higher then the fill neck to vent the tank and prevent this fuel from spilling out.
The roadblock im hitting now is where the heck to run it to... the filler neck does not have a return port on it to hook into. It’s just a straight shot down to the tank. So I was thinking the only place taller then the top of the fill neck is in the trunk. Now the problem I imagine is that the trunk and cab of the car will smell very strongly of gas if I do that.
So I’m looking for opinions and help of where to run that vent line.
Thanks
I used one of these. Made a bracket and mounted up on the inside of the rear frame rail.
Remote Mount Rollover Vent Valve