Does anyone have a shop manual for the 1963 Buicks - especially the Riviera? I had heard that the '63 was rushed out and used basically the standaed '63 Buick frame, unique from the 1964-1965. Then again, it may be the same as the '64-'65 Riviera. Can someone supply scans of the 1963 Riviera and standard Buick frame with dimensions so I can compare? Thanks!