Final update. Since i havent found a how to get that damm thing back in with that off center inspection hole that is actually to small.
The pump clip is an oetiker 12.3 and after crimping it will just like you have never been there.
Second if you look at the seal design it first needs to go in the ring of the tank. And then the pump otherwise you will fold it. So you need to slide the seal down from the top ring of the pump and fiddle with the pump in one hand holding a flash light in your mouth until you get the seal in the tank ring and then push the pump body in.
P.s. smoke your victory sigaret away from the car. Otherwise your wife might freak out.
P.s.s it easier to drop the tank.