Looking for paint markings

[Guest KRBuicks]

We are improving our '68 Riviera GS to a concourse level and are in need of any information on suspension markings from the factory. The car was built in Flint. Any information we can gather would be great, even from other years like '67 or '69. These cars are usually never done to this level, one reason why we are going the extra step. I have looked at many other models of similar years and am in need of more comparisons. There is very little information out there for these cars.