I have had a 110mm Aluminum center filler Blau fuel cap for a while now, but have not been able to find a good enough aluminum fin for it, so I'm letting the stainless version in place. This is a polished Aluminum outerskin with steel internal version, very rare, difficult to get. it has a couple small marks/dents, but with a fin on top these won't be visible. It comes with a short fuel filler neck to weld onto a pipe if you want to go with a thru the hood center filler. Or just weld it to your tank as an under the hood version and you won't need fin on top.
Also in this package the Aluminum Blau 80mm oil cap for the GT wide oil filler, also a polished version with a very small dent from storage. Cap is NOS, I bought the last Blau box with these type caps many years from the factory through a friend in Austria. It's the aluminum outer skin with steel inner part and cork seal. It comes with a long neck to create your own wide oil filler tube based on your standard oil filler tube.
The set goes for $500 shipped

+++++++++++++ On hold, working out a trade with a fellow board member ++++