Fuel tank, fuel filler pipe and fuel cap - talk to me please

[WorldClassAccident]

Sorry for the lack of specific photo's but I am not very mobile at the moment so I am using ones I have taken previously.

I have a fuel tank with the filler tube protruding.


With the body on the filler tube stops about an inch and a half short of touching the body where the filler cap will need to be mounted. (There is a bit of cardboard around the filler tube to stop stuff falling in)



I want to fit a fuel cap something like this


Am I best connecting the cap and the tank filler neck with a short length of rubber hose and two fuel clips? I assume I can get the appropriate hose in the appropriate size.

Lots of the sites I have looked at talk about welding the filler neck but I don't think this is practical on the G46.

Any advice welcome.