i am not up to speed on this stuff. it was a 3m product i think. maybe info on web or do you have an up to date body shop in your area? this teacher showed me a panel glued on to the lower rear fender of a 68 ply sedan with no welding...looked good and strong to my uneducated eye. as i said i will try to find out more soon, but i have a full plate of "situations"here right now... regards tim colson