Hi there Ryk, Long time no post. Just trying to get through the winter blahs here in northern Michigan. Got myself a couple of vintage picket fence re-pops to experiment on. Gonna get a contour gauge and take it to the tank where I want the top and bottom of the new badge to set, then transfer those to the badge and grind accordingly. Then fill the back of the badge with a self-hardening epoxy putty and push it up against the tank which will have a layer of tightly stretched plastic wrap to protect the paint. Then let the putty harden. Peel off the plastic wrap and that should give me a fairly good mating surface between badge and tank. Then just use the old 3M automotive double-side emblem tape to mount. Worst that could happen is I destroy the badges while grinding the edges, or the chrome peels at the edge. Then I just re-tape my old original plastic badges back on. ; ) I'll let you know how it works once it warms up enough for me to get out in the garage to start the project..... Probably around May, at the rate were going here weather-wise. LOL!!!