"chrome on my dash is so completely missing it looks like it was made with shiny black plastic only"
Vacuum metalizing process in many situations is only as good as the paint job that protects it. Eluded to in step 5 here:
https://www.vacuum-metalizing.com/wh...um-metalizing/
Keep in mind how long ago these factory parts were done.
(The link above does not represent any endorsement for the company. Used for information only )
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE