Well, two things I did last few days.
1] I checked for the first time since we bought the Monte the engine casting and code identification numbers. I was worried that in the 43 years someone may have replaced the engine. To my delight I found that the engine is the original from the factory. It even has the vin stamped on the deck behind the alternator!
The stamp on the front of the eng was decoded to this:
CRE 1970 350 tur 350 300 4 A F X
and has the vin stamp matching my vin.
The back casting number reads;
1970-73 970014 350cid 200low 300high 2/4 bolt main LA built for Camaro
Build date J=Sept, 16 day 9=1969
2] I replaced the upper control arms. Very easy I might add.
Yes, I did clean the engine areas that I had to scrape to find those casting numbers and touched up the paint.