Got the parts needed. I have a check valve, and bubbler, and a control valve from a pet shop (or walmart), and then a 1/8 to 3/8 hose convertor, and a 3/8" universal fuel filter. It will be hooked up to the vacuum port just after my TB that has vacuum increase as RPMs do. Bubbler will be the pickup (also a coarse filter), with the control valve in the soft drink cap to regulate flow, then the two adapters will splice in the fuel filter, then back to the 1/8 hose to the check valve then to the vacuum port. The coke bottle will be located in my hand to begin with, then maybe in the engine bay after I get the flow tuned. It's not meant as a fuel saving device directly, but I hope to slowly steam clean everything past that port and get my FE through cleaner parts.
Bubbler, check valve, adapters, 8' of hose, and control valve were about 2 each, and the fuel filter is 2.49. I got the fuel filter just because, and went 3/8 because most full size cars in Japan have 3/8 inch vacuum ports.