I can't help with the parts but can help with a little info. The gauges, dash bezel and dash pad is the same as the 68 LeMans and GTO. Do you want/need the standard gauges with "idiot" lights or rally gauges with oil and temperature gauges? The seats are the same as 68 Chevelle seats. The console was used in 68-72 Chevelles. The 68s and I think 69s didn't have locks on the console lid. 70-72 did. I believe the windshield was used in the Chevelle, Cutlass, LeMans and GTO for a few years. If someone here doesn't have the parts you need I would chack Ebay. There are always gauges and dash bezels listed.
James