LS swap rollover valve options

[Kmart78]

I’m doing an LS swap in my 71 Camaro and need to incorporate a rollover valve but I am having trouble. I’m using a Aeromotive tank and there is a vent port on the tank and the fuel pump so I’m running a T to use both of them and then the combined vent line is going to a Chris Alstons billet vent canister. Now, this should work for fuel vapor concerns but what do I do about a rollover valve for safety?? I’m not finding any inline rollover valves. What are you guys doing for a rollover valve and any suggestions for my application? Any help would be greatly appreciated!

[79 Camaro]

I've used a roll over valve that's used by the dirt circle track guys. I's about 3/8" in diameter, about 3/4" long and made of plastic. Basically a plastic tube with a ball inside to stop fuel flow if you are upside down. I don't run the vent canister but I think you could put it inline ahead of the canister. I don't have a part number