Fuel tank missing hoses & missing parts - Questions Options

[PaIsa]

I know I am missing some parts & hoses on the fuel tank for our 1972 914 (1.7L with carb).

I don't have any hoses of any of the three nipples on the expansion tank. I don't have a carbon canister and I am sure I am missing others hoses. I don't have a clear understanding as to where hoses should be connected to.

I guess that the expansion tank nipple(s) are to be connected to the carbon canister, but looking at some sketch found on the web, 2 nipples seem to be connected together and seem to go down as a drain. The one near the filler neck seems to be the one connected to the canister. Is it like this?

For the carbon canister, the sketch shows 2 hoses that I assume have to go to the back of the car to sent the fumes in the air intake. Probably a stupid question, but why 2 hoses? Also, being on carb, where should I sent these hoses to?

Anyone has a good sketch showing the schematic of these hoses for a carb engine?

Thanks