My 70 RT/SE is also a FK5 car but one would have never know it since I bought it yrs ago where it had been painted BROWN
by the previous owner, I didn't know much about build sheets, codes etc. all I knew is that I had the 440-6 engine in that baby. I had it painted yellow and added black stripe on hood and '71 RT stripes because I liked that look. Now MANY yrs later I am in the very early stages of thinking about restoring to original condition, lots of helpful info
on this site, but I wasn't too thrilled to find out my car was originally burnt orange, which I didn't care for, but from your pics you posted, Burnt Orange isn't half bad