Fuel line Mod Questions- Confused

Hello all,

I’m still new to this and learning as I go. I believe with the 90+ degree days and heat index at 105 the last couple days in Miami and foreseeable future , I am certainly experiencing vapor lock conditions.

After searching these forums and YouTube, I’m still confused in terms of where to route the return line from the 3 way fuel filter back to the tank?

1. Drop the tank, drill new fitting at the top and plumb/ run the return in?

2. Drill the fuel filler neck and plumb there? Don’t like this idea, as it would cause me to run a fuel line inside the trunk.

3. Run a 3 way brass tee to the tank and plumb it to the existing rubber feed line? Confused here as it will not return fuel to the tank, rather reroute it under some pressure back forward to the mechanical pump.

And with all options, do you run a one way check valve on the line so the vapors don’t push back into the filter?

Thanks.