need help identifying gas tank

[Guest]

I bought a tank from a member here last June. I had the tank repained and am in the process of putting the bike back together (everything except where the vent exits is the same on the bottom). I transferred the petcock and float to the new tank. I ran into a problem when I tried to put the gas cap on. Other than filler neck it is exactly the same. Filler neck isn't the same as the tank that was on it. Bike is an 85 gs700e. I ordered 44200-43410-KEY which is the non california gas cap.

First off a pic of the bike



The top of the old gas tank with gas tank



without (notice the location of the vent)





and the new tank with what clearly isn't the right cap



without the cap (notice vent location is below the seal)





closer pic of the vent hole



Any help someone can give identifying the tank would be greatly appreciated. The sooner I get this ordered the sooner another gs is back on the road

[SVSooke]

If it looks basicly the same other than the filler neck it's a 83 750 tank.The cap is this style:

[gpd211]

Thanks for the quick reply. The tanks look identical except for the filler neck