Back in 2015, I had backup fender tags made by "AG Backeast" (Brett Stoutenberg) for each of my cars. The quality was outstanding as they looked exactly like the originals minus the 50 years of wear and corrosion. In 2015, the cost was $175 per tag and the turnaround was roughly a week. I...
In the 70's, I had a 70 Challenger R/T, 383 magnum and a 70 Challenger R/T SE, 383 magnum. They were both were completely original cars and they both had crinkle black dual snorkel air cleaners.
I used Pennzoil Synchromesh manual transmission fluid.
http://www.pennzoil.com/#/transmission-fluids-and-gear-oil/pennzoil-synchromesh-manual-transmission-fluid
They sell it at just about all the automotive stores.
I know Brewer's Performance sells/recommends Pennzoil 80W-90 weight GL-4...