You can find the old PPG color chips & paint mix at this link with pix of the cards:
http://www.autocolorlibrary.com/aclchip.as...swagen-pg01.jpgChange the search terms if you need a different MY, but Bahia Red was the same for all - & VW was the same as Porsche (their library is missing many MYs under Porsche color codes).
Then PaintScratch.com or PPG or Dr. Color Chip should be able to mix some up for you.
PPG, Dupont, Galsurit & Sikkens are the OEM (latter 2) & higher quality paint makers (all 4) for resto work.
You may also be able to go to one of the auto shop paint suppliers of one of those 4 to get them to use their color gun on your existing paint for a color match.
In all cases, test them for the correct color to make sure the match is good.
Good Luck!
Tom
///////