Thanks for all the kind words everyone! I do call this my profession and I have a small restoration shop but I am somewhat young yet and have a lot to learn. With this project being that it is my own I have more time than funds and so if some of these mods take a little more time but save me money and achieve the same end result thats ok.
MSTSFabbed. I liked the way the cap looked on his 69 and really liked not having to worry about where to set a cap when filling up or letting it hang down against my painted bumper from a cable. Tanks sells a nice product and I will be using their 22 gallon EFI tank as well. The Scott Drake Challenger cap looks nice and is a good piece but the base isn't flat. It's concave and its the opposite direction of the 67-69 Mustang tail panel. If you have more room the same version of the cap is offered for a Jeep but it is much larger. I used the challenger cap and machined the mounting base flat to work for my 70.
Ha! We're exactly on the same page. I was looking at the Jeep version thinking the flat would help me out, but hadn't considered it being bigger or interference with the trunk key hole, which I'd prefer to keep if possible. I'll look closer at the ODs, thanks for the tip!
I'm right with you, I've got a perfect arced scrape in my painted bumper from my dumb stock cabled cap rubbing!