I purchased a flip top gas cap and trim ring for my '70 Challenger from Year One. I have verified that I did receive their correct cap for a '70; however, I'm not sure it is going to fit. The screw pattern is slightly off, but that's not the problem. Just holding it against the body, it appears that the depth of the cap mounts will be an issue. Even allowing for the screw heads, I think the cap and ring will not fit flush against the body - maybe 1/8" or more. In other words, it looks like the indention of the body is too shallow for the unit. I know the cap itself stands out from the body, but the mounts seem too long.
I hate to break out the old screws (which are painted over) if it is not going to work. What do you think?