Coolant recovery systems

[tman]

Looks like you rather have the radiator filled up after it does its drain after a drive.  At that point you don't need to fill it anymore.  You would be at the sweet spot to stop filling it.  For me, just getting a can for the overflow just prevents spill on the street.  Then you still need to fill the radiator.  For piece of mind, just get that stock appearing recovery system, then the radiator will be full all the time and no puking.
On my 70 Cuda, I copied someone's system using the windshield washer tank as a recovery system.  It works just like a normal recovery system and you can't tell I have one.  Unless you look at the tank and see green fluid. My radiator is full all the time.

[BIGSHCLUNK]

One of the first mods I did years ago was a coolant recovery tank. Got tired of the constant spot and people telling me I had a leak. I fabbed a bracket an set the tank next to the radiator. I highly recommend it, its not had to do. I got pics somewhere I can post if anyone is interested   

[1black71rt]

https://www.partsmix.com/products/over-flow-bottle-bracket-combo-1973-74-will-fit-70-71-72-73-74-b-body.html

If you want the factory setup.

[Claudia]

I added an aftermarket overflow tank to my car.  Although I think they should have added a slight flare to the hose connection points . . . otherwise, I am pretty happy with mine so far.

Please, please, please consider getting rid of that glass fuel filter. IMO they should be illegal! They can break or rattle loose. A disaster waiting to happen!  I know from personal experience. I'd just hate to read on here someday how you lost your car ( or worse!) to a fire. Metal ones are the safest . IMO plastic ones are also not a good idea.

That picture was from some time ago . . . I no longer have any of the glass style filters.