well... until i read the "The end result has to be close to invisible for me to be happy with it" I thought "no problem"
However, that is going to require serious skills to achieve. it would be MUCH easier to find a different 201.
To fill in the missing paint I recommend black pigment powder mixed with shellac, but trying to color match a spot in the middle of ANYTHING is really hard. Matching the shade/color on a 50-60 year old paintjob is near impossible.